56 results for “Exploitation”

Cloudflare's follow-up on eMudhra's eight trivially recoverable intermediate CA keys (such as 4, 56 and 66), disclosed 19 October 2026. Pingora logging showed about 22,000 handshakes with the weak keys, including about 160 forged certificates made within hours of disclosure. Probes on 50 million challenge pages show many bots, old browsers and Android WebView still trust the chain.

blog.cloudflare.comwriteupPublished and added 30 Oct 2026🛡️ Security

Alpine Linux incident report on attempted exploitation of CVE-2026-97229 (CVSS 10.0), a regex-evaluation bug in Ruby's Onigmo engine reachable through GitLab CI configuration. An attacker crashed workers 8 times on 20 and 21 October 2026. Upgrading to GitLab 19.3.6 did not fix it because the patch sits in GitLab's bundled Ruby. Alpine rebuilt the instance and found no tampering with aports or releases.

alpinelinux.orgwriteupAdded 29 Oct 2026, published 28 Oct 2026🛡️ Security

Honeypot writeup of in-the-wild exploitation of Plex Media Server through the Plex2Shell chain (CVE-2026-96652, -96654, -96655, -96656) in October 2026. Attackers from 45.194.92.222, 91.92.40.202 and 176.65.139.228 used SSRF-style timeline/subscribe requests and downloaded a Docker-named dropper and an XMRig miner from 217.60.194.116. Includes file hashes, a later-seen proxyware sample (myawesomeproxy), lab pcaps for signatures and links to sandbox reports.

boredhackerblog.infowriteupAdded 20 Oct 2026, published 19 Oct 2026🛡️ Security

XBOW researchers describe a Chrome full-chain exploit that combines a V8/Maglev deoptimization bug (mutable HeapNumber treated as immutable), a TOCTOU flaw in Blink's animated-WebP decoder exploiting a transferred ArrayBuffer, and a race in Crashpad's remote-memory reader to achieve code execution outside the renderer sandbox. The chain, built in six days largely by AI agents using OpenAI's gpt-5.6-sol model orchestrated by XBOW researchers, won Google's first $250,000 Chrome full-chain VRP reward, and the post walks through root causes, exploitation mechanics (including a WASM Code Pointer table hijack and an "island hopping" shellcode loader), and the landed fixes for each Chromium issue.

xbow.comwriteupAdded 18 Oct 2026, published 13 Oct 2026🛡️ Security

Huntress documents active exploitation of two AhsayCBS (Ahsay Cloud Backup Server) vulnerabilities being chained together: CVE-2026-105133, an authentication bypass in checkSysPwd, and CVE-2026-105134, an unauthenticated RCE in the Replication Receiver's UpdateReceivers.do endpoint that grants SYSTEM. Attackers use the chain to drop JSP webshells, then deploy a renamed XMRig cryptominer (masquerading as msedge.exe via a modified NSSM binary), a Task-Manager-aware anti-detection PowerShell script, and the vulnerable WinRing0x64.sys kernel driver for hardware-level miner access. Huntress provides IOCs, mitigation guidance (restrict management interface, re-image if compromised) and four Sigma rules targeting each stage of the intrusion chain.

huntress.comwriteupAdded 9 Oct 2026, published 8 Oct 2026🛡️ Security

watchTowr post-exploitation analysis of CVE-2026-88771, an unauthenticated log-poisoning command injection in Citrix NetScaler (advisory CTX697096). Sensors logged thousands of attempts: about 85% were OOB callbacks, the rest Sliver implants, a trojanized Dropbear SSH backdoor, a Perl stager with a PHP webshell, and SSH-key and secret-harvesting sprays. Includes artifacts to hunt (/var/tmp files, ns_helper, ns.conf edits) and IOC repo pointers.

watchtowr.comwriteupAdded 30 Oct 2026, published 7 Oct 2026🛡️ Security

Walks through a post-exploitation credential-harvesting technique on Linux: enabling password authentication in sshd_config, writing a pam_exec.so logging script, and inserting it into /etc/pam.d/sshd (or common-auth/password-auth) so every SSH login attempt is logged with username, password, and source host to a hidden log file. Also covers using each user's ~/.ssh/known_hosts to identify pivot targets for lateral movement during a pentest.

hackers-arise.comwriteupAdded 7 Oct 2026, published 6 Oct 2026🛡️ Security

An incident-response style deep dive into active in-the-wild exploitation of Citrix NetScaler ADC/Gateway via CVE-2026-88771 (unauthenticated RCE through log-poisoning of ns_monuploadd_err.pl) and CVE-2026-88772 (DTLS memory overflow), part of 8 CVEs disclosed by Citrix on September 27, 2026. The author reverse-engineers the full post-exploitation toolkit dropped after root is obtained: SLAPSHOT (a Perl/Python loopback TCP tunneler/pivot), WHIPSHOT (a disguised PHP web shell served via fake CSS paths), the Platypus C2 agent, and a Perl "Pitboss" dropper script (with full decoded source and an embedded SHA-256-protected PHP web shell) that creates a rogue superuser, SUIDs /bin/sh, exfiltrates NetScaler config, and patches httpd.conf for persistence. It closes with extensive IOCs (C2 IPs, file hashes, paths, credentials) and patch guidance for affected NetScaler builds.

theravenfile.comwriteupPublished and added 6 Oct 2026🛡️ Security

Walkthrough of Platypus, an open-source C2-style host management platform (github.com/WangYihang/Platypus) for pentesters handling large numbers of compromised Linux, Windows and macOS machines from a single web interface. Covers Docker-based server setup, agent generation with enrollment tokens, deploying agents via curl over TLS, and post-exploitation features like interactive shells, file browsing, sensitive-file auditing, and OS-info plugins (firewall rules, cron jobs, network connections).

hackers-arise.comwriteupAdded 7 Oct 2026, published 2 Oct 2026🛡️ Security

Microsoft Threat Intelligence tracked in-the-wild exploitation of CVE-2026-73570, an unauthenticated OS command-injection vulnerability in Zimbra Collaboration Suite's SNMP notification path (swatchdog-to-snmptrap), triggerable via a crafted SMTP request when the optional zimbra-snmp package is enabled. The post documents pre-disclosure scanning, JSP webshell deployment, a novel pam_exec/zmmailboxdmgr privilege-escalation chain to root, systemd-based persistence (zimlog.service), theft of zimbraPreAuthKey/zimbraAuthTokenKey via zmlocalconfig and LDAP, lateral movement over Zimbra's SSH identity, a multi-stage Go-based remote-access agent (zimclient2 via zimdown2/agent2.sh), a dedicated mailbox-exfiltration implant, and an AzCopy-based exfiltration attempt, closing with Defender XDR KQL hunting queries and MITRE ATT&CK mapping.

microsoft.comwriteupAdded 1 Oct 2026, published 30 Sep 2026🛡️ Security

A quoted excerpt from Anthropic's Frontier Red Team report on GLM-5.3 finds that, across 100 randomly selected tasks from an internal Binary Exploitation benchmark, GLM-5.3 achieved full control-flow hijacks in 4% of trials and Claude Mythos Preview in 6%, while earlier models (Claude Opus 4.6, GLM-5.2) succeeded in none. Anthropic frames this as a meaningful threshold crossed in advanced cyber capability, part of ongoing frontier-model dangerous-capability evaluation.

simonwillison.netwriteupPublished and added 29 Sep 2026🧠 AI

Mandiant and GTIG report on exploitation of the Citrix NetScaler ADC and Gateway zero-day CVE-2026-88772, active since early September 2026, alongside CVE-2026-88771. It covers the DTLS-triggered NSPPE crash, httpd.conf persistence via .deb and .sig handlers, SUID /bin/sh, and the WHIPSHOT web shell and SLAPSHOT tunneler. It gives hunting commands, log artifacts, YARA rules, patched builds and containment steps.

cloud.google.comwriteupAdded 29 Oct 2026, published 29 Sep 2026🛡️ Security

watchTowr Labs reverse-engineers CVE-2026-88772, a preauth DTLS memory overflow in Citrix NetScaler ADC/Gateway's nsppe binary, exploited in the wild as a zero-day and fixed in Citrix bulletin CTX697096. The writeup walks through patch diffing between build 14.1-73.30 and 14.1-73.37, crafting malicious DTLS handshake fragments that trick NetScaler's reassembly logic into copying about 174KB of NSB chain data into a 35,840-byte scratch buffer, and the full exploitation path from crash to a fake-vtable hijack, ROP-based mprotect call, and shellcode execution, plus a public detection artefact generator.

labs.watchtowr.comwriteupAdded 1 Oct 2026, published 29 Sep 2026🛡️ Security

Mandiant and GTIG report renewed mass exploitation of Oracle PeopleSoft CVE-2026-35273 by UNC6240 (ShinyHunters). The actor bypassed WAF rules by requesting /%50SEMHUB/ instead of /PSEMHUB/, then deployed JSP web shells (x.jsp, u.jsp), the SIDEEYE backdoor (Ple64.exe), Neo-reGeorg and MeshAgent on dozens of systems globally. The post gives host and log hunting guidance, remediation steps and detection rules.

cloud.google.comwriteupAdded 29 Oct 2026, published 25 Sep 2026🛡️ Security

Huntress SOC analyzes an intrusion that began with exploitation of Samsung MagicINFO (CVE-2025-4632, after incomplete fix of CVE-2024-7399) via tomcat9.exe. The actor took three tries to install AnyDesk (certutil and PowerShell attempts were blocked by Defender), created an 'oldadministrator' account, disabled Defender, then ran Silent XMR Miner Builder, which compiled a Monero miner on the endpoint using csc.exe, cvtres.exe, donut, tcc and MinGW gcc. The miner ran masquerading as explorer.exe against C3Pool; the post gives command lines and detection ideas such as unusual compiler child processes from an unsigned parent and explorer.exe with mining arguments.

huntress.comwriteupPublished and added 24 Sep 2026🛡️ Security

Gambit Security recovered the staging server of a financially motivated actor running three open-source AI agent harnesses — Strix (vuln scanning), Cairn (autonomous exploitation), and Hermes (orchestration) — against hundreds of online retailers at a marginal cost of tens of dollars per target. The campaign exfiltrated 600,000+ credit card records via Magento database compromises, deployed checkout-page card skimmers on at least 19 confirmed and 100+ further sites, and in one case an agent's own cleanup routine dropped 180 database tables including victim backups. The report details full attack chains (SQLi to RCE to AWS Secrets Manager dump to card decryption), the AI harnesses' operating costs (~$25 mean per target on OpenRouter/opus-4.6/GLM/DeepSeek), and multiple real-world skimmer injection techniques.

gambit.securitywriteupAdded 26 Sep 2026, published 22 Sep 2026🛡️ Security

Sysdig's Threat Research Team documents a hand-coded (non-LLM) exploitation of CVE-2026-39987, a pre-authentication RCE in marimo notebooks caused by a missing validate_auth() check on the /terminal/ws WebSocket endpoint. The operator chained credential theft from environment variables and Redis, AWS Secrets Manager retrieval, and SSH pivoting to a bastion host in eight seconds, ignored a planted prompt-injection honeypot meant to detect LLM agents, and left behind reusable base64-encoded boto3/paramiko toolkits in /tmp. The post includes full script reproductions, IOCs (IPs, file paths, AS63949/Linode infrastructure), CloudTrail/GuardDuty detection guidance, and remediation steps (patch to marimo 0.23.0, restrict the terminal endpoint, scope Secrets Manager access).

sysdig.comwriteupAdded 20 Sep 2026, published 11 Sep 2026🛡️ Security

Cisco Talos details active exploitation of CVE-2026-20079 (CVSS 10.0 unauthenticated auth bypass leading to root) and CVE-2026-20316 (low-privilege login via static credentials) in Cisco Secure Firewall Management Center. Three post-compromise clusters are tracked: UAT-12197 deploying a JSP web shell and JAR command executor to exfiltrate credentials; UAT-11823, overlapping with Sandworm, using a malicious Makeself license.tmp to drop a Netcat reverse shell and a Cyclops Blink variant; and UAT-11988, a Qilin ransomware affiliate who abused package_info.pl for LOTL recon, SOCKS5/reverse-SSH tunneling, and ultimately deployed Qilin ransomware. Talos provides Snort SIDs, hotfix guidance ahead of a comprehensive hardening release, and a GitHub IOC repository.

blog.talosintelligence.comwriteupAdded 7 Oct 2026, published 9 Sep 2026🛡️ Security

Wiz researchers chain three LiteLLM flaws into a full pre-auth-to-cloud-compromise path: an MCP endpoint authentication bypass (CVE-2026-59822) that grants a session with any garbage Bearer token, a custom-code-guardrail sandbox bypass leading to root RCE (CVE-2026-59821) via exec() on unsanitized admin-submitted Python, and a config-endpoint authorization gap (CVE-2026-35029). They also show pass-through endpoints can be pointed at the AWS IMDS to steal IAM credentials, bypassing IMDSv2 via header-prefix forwarding. A scan of ~3,074 internet-facing instances found 9.6% accepting the default sk-1234 master key or no auth at all, and CVE-2026-59822 is now in CISA's KEV catalog with observed in-the-wild exploitation.

wiz.iowriteupPublished and added 9 Sep 2026🛡️ Security

Proofpoint details "BlueMoon," a novel exploit kit chaining a Chrome V8 type-confusion RCE (CVE-2026-85046), a V8 sandbox escape via WebAssembly metadata corruption (CVE-2026-87491), and a Windows kernel LPE (CVE-2026-85880) to break out of the browser sandbox. Within days of first use by China-aligned TA412 (28 Aug 2026), the kit was independently adopted by UNK_LateNight (delivering ShadowPad to US aerospace targets), UNK_DoubleCheck (Rust-based loader against a Vietnamese manufacturer), and UNK_QuietRacket (custom malware against Indonesia/Singapore government and finance targets). The piece analyzes exploit internals (Maglev/TurboFan JIT bug, reflective DLL loading, ALPC/WNF kernel exploitation), flags artifacts suggesting AI-assisted exploit development (debug comments, handover markdown files, v8CTF references), profiles the GemStone Chromium-extension credential-theft backdoor deployed via Secure Preferences forgery, and provides IOCs, ET rules, and a YARA rule for detection.

proofpoint.comwriteupAdded 26 Sep 2026, published 9 Sep 2026🛡️ Security

Wiz Threat Research ran honeypots across LiteLLM, Flowise, LangChain, Langflow, ChromaDB, Ollama and other AI/ML services for 90 days, capturing active exploitation of an MCP Gateway auth bypass (CVE-2026-59822) and an MCP server test-endpoint command injection (CVE-2026-42271, in CISA KEV, chainable with Starlette CVE-2026-48710 for unauthenticated RCE and linked to Qilin ransomware exploitation) used to deploy fileless cryptominers. It also documents blind prompt injection campaigns against LangChain, Flowise, OpenWebUI, and Node-RED agents that trigger OS command execution confirmed via out-of-band DNS callbacks to OAST domains.

wiz.iowriteupAdded 3 Sep 2026, published 27 Aug 2026🛡️ Security

Blackpoint's Adversary Pursuit Group details Miraak, a novel modular post-exploitation framework discovered through proactive hunting of exposed open web directories. The writeup covers trojanized hostfxr.dll loaders that masquerade as legitimate .NET runtime components (with XOR 0x42/0x5A obfuscated payloads and configs), a PostgreSQL/Timescale database used as the C2 control plane instead of HTTP beaconing, Cobalt Strike BOF-compatible execution inside the agent, and an associated F#-based reverse TCP tunneling implant delivered via a trojanized Microsoft.DocAsCode.Common.dll (DocFX) dependency, with infrastructure pivoting via a self-signed "miraak-socks" TLS certificate and IOCs.

blackpointcyber.comwriteupAdded 26 Sep 2026, published 26 Aug 2026🛡️ Security

Trail of Bits found and reported an authorization bypass in Provenance Blockchain's marker module (Cosmos SDK) that let any user with zero tokens self-grant ACCESS_ADMIN on non-fixed-supply marker accounts, because the access check compared caller balance against a stale on-chain supply field that never diverged from zero. The bug affected 82 live mainnet markers (tokenized loans, bridged stablecoins, consortium deposits, governance escrow) and allowed two-transaction exploitation to mint arbitrary tokens or drain roughly $500,000 in escrowed nhash; it was mitigated in v1.28.0 (PR #2627) and fully fixed in v1.29.0 (PR #2734) by reading live bank-module supply with an explicit zero-guard.

blog.trailofbits.comwriteupAdded 3 Sep 2026, published 25 Aug 2026🛡️ Security

Analysis of CVE-2026-44963, a critical (CVSS 9.4) unsafe-deserialization RCE in Veeam Backup & Replication 12.x rooted in BinaryFormatter/.NET Remoting that lets any low-privilege domain user gain SYSTEM-level control of domain-joined backup servers; fixed in 12.3.2.4854. The author correlates it with a 2025 "Bug of June 2025" exploit sale, documents a Lynx Ransomware Group negotiation describing exploitation to create local admin accounts and dump domain credentials, covers an underground forum ad claiming an unauthenticated patch-bypass 0-day, and includes a Veeam-specific attacker TTP matrix (e.g. CVE-2023-27532 credential harvesting) plus defense recommendations.

theravenfile.comwriteupAdded 3 Sep 2026, published 20 Aug 2026🛡️ Security

Check Point Research reports on "StopAndProtect," an operation behind the compromise of thousands of WordPress sites, tracing the infrastructure and tactics back to a single actor or campaign. The piece appears to unmask the operators and methods used for mass WordPress exploitation, based on the title and URL alone since the fetched page content could not be processed for this classification pass.

research.checkpoint.comwriteupAdded 26 Sep 2026, published 18 Aug 2026🛡️ Security

Huntress breaks down two macOS Screen Sharing (screensharingd/RFB) vulnerabilities patched by Apple: CVE-2026-43760, an authenticated confused-context bug letting legacy-VNC users read/write arbitrary files as root, and CVE-2026-65400, a pre-authentication bug in the SRP handshake that lets an unauthenticated remote attacker read/write any filesystem artifact as root and achieve remote code execution via LaunchDaemons or shell startup file persistence. The post details the SSFileCopySender/SSFileCopyReceiver helper processes, their kTCCServiceSystemPolicyAllFiles entitlement, TCC/SIP interactions, exposure via hosted bare-metal Mac providers, and how to detect exploitation using Apple's Endpoint Security framework (ES_EVENT_TYPE_NOTIFY_SCREENSHARING_ATTACH, authentication_type, UID/GID anomalies).

huntress.comwriteupAdded 3 Sep 2026, published 7 Aug 2026🛡️ Security

OpenAI's August 2026 system-card addendum for the GPT-5.6 Sol and GPT-5.6 Luna ChatGPT updates, assessed under OpenAI's Preparedness Framework. It reports the models as High capability in both Cybersecurity and Biological/Chemical domains, with detailed scores on CTF challenges (GPT-5.6 Sol saturating at 97.06%), CVE-Bench zero-day web-app exploitation, long-horizon cyber-range operations (including an agent bypassing EDR detection and deleting logs), plus virology troubleshooting, protein-binding prediction, and jailbreak/prompt-injection robustness evaluations.

deploymentsafety.openai.comwriteupAdded 7 Oct 2026, published 6 Aug 2026🛡️ Security

Huntress details a July 2026 incident where attackers exploited a classic SQL injection flaw in a public-facing Java/Tomcat application to reach an Oracle database over JDBC, then used Oracle's CREATE JAVA SOURCE statement to compile a custom post-exploitation toolkit called khunt directly as database objects. Khunt modules (KhuntCmd, KhuntHash, KhuntFS/FS2, KhuntT, KhuntUnzip) let the attacker run OS commands, dump Oracle credentials, browse the filesystem, and ultimately pivot to SYSTEM-level RCE on the underlying Windows host, where they exfiltrated SAM/SECURITY/SYSTEM registry hives. It's notable because storing malicious code as PL/SQL/Java database objects rather than OS files/processes evades traditional EDR and AV visibility.

huntress.comwriteupAdded 3 Sep 2026, published 5 Aug 2026🛡️ Security

A technical writeup by security researcher BlackSnufkin describing the discovery of a live, unpatched 0day kernel-mode local privilege escalation (LPE) vulnerability in an anti-cheat driver reportedly deployed on roughly a billion Windows machines. The post likely covers the vulnerability research and exploitation process targeting the anti-cheat's kernel component. Full page content could not be verified in this pass; summary is inferred from title and URL alone.

blacksnufkin.github.iowriteupAdded 2 Oct 2026, published 4 Aug 2026🛡️ Security

Huntress' running investigation into critical N-able N-central vulnerabilities exploited in the wild, tracking CVE-2026-18556/CVE-2026-18577 (August auth-bypass/account-takeover via incomplete patch) and later CVE-2026-86206/CVE-2026-86207 and a pre-auth RCE zero-day CVE-2026-86218 (CVSS 10.0). The post details reproduced exploit chains abusing N-central's Take Control feature and API to gain admin access and deploy Cloudflare tunnels for persistence, along with IOCs, attacker tradecraft (anomalous ".invalid" account creation, URL-encoded API abuse, VPN exit-node IPs), and concrete log-based detection guidance for MSPs running the RMM platform.

huntress.comwriteupAdded 3 Sep 2026, published 3 Aug 2026🛡️ Security