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The long tail of Clop’s PTC hack is just beginning to emerge
Clop mass-exploited CVE-2026-12569 in PTC Windchill and FlexPLM in early June, claiming data theft from dozens of large organizations.
Clop began sending extortion emails in mid-July after exploiting CVE-2026-12569 in PTC Windchill and FlexPLM, likely as a zero-day in early June before PTC's June 17 disclosure and patch. Confirmed victims include Toast and Zebra, while GE, Philips and Shell are among claimed victims. CISA added the flaw, which allows unauthenticated remote code execution, to its KEV catalog on June 25. ReliaQuest said the group used a custom Windchill-specific web shell for credential theft and large-scale exfiltration, echoing its past MOVEit and Oracle E-Business Suite mass-exploitation campaigns.
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Hackers Actively Exploiting Gitea n-day RCE Vulnerability in the Wild to Hijack Instances
Chinese-speaking Red Heron actors mass-exploit Gitea n-day RCE CVE-2026-60004 to steal source code, credentials, and pivot into victim networks.
Acronis Threat Research Unit reports active in-the-wild exploitation of Gitea RCE CVE-2026-60004 (CVSS 9.8, versions 1.17-1.27.0, fixed in 1.27.1) by a Chinese-speaking actor dubbed Red Heron. The actor scanned 1,386 Gitea servers across seven countries, held a separate list of 477 Taiwan-based targets, and confirmed victims in Canada, Argentina, Taiwan, the US, and Sri Lanka. Intrusions deployed the JITTERLY Linux implant with the SIXZUT LD_PRELOAD rootkit, stole password hashes and SSH keys, and in one case gained root admin access to a three-node Proxmox cluster.
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Attackers Chain JFrog Artifactory Flaws to Gain Admin Control and Plant Backdoors
Attackers chained JFrog Artifactory flaws CVE-2026-42018 and CVE-2026-42016 for admin control, planting Rust backdoors; CVE-2026-82329 also mass-exploited.
Wiz observed attackers chaining CVE-2026-42018 (anonymous-token leak) and CVE-2026-42016 (token escalation) in self-hosted JFrog Artifactory between August 15 and September 8, gaining admin control, creating admin accounts, and installing malicious Groovy plugins and a custom Rust backdoor. Separately, critical authentication bypass CVE-2026-82329 (CVSS 9.8) was mass-exploited starting September 1, drawing ~406,000 exploitation attempts on September 2 per Fastly. CISA added CVE-2026-82329 to KEV on September 2 with a September 5 federal deadline. Patching does not revoke minted tokens or rotate stolen join keys; admins must review accounts and rotate credentials.
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Weekly Cybersecurity Newsletter – Top 50 Biggest Cybersecurity Stories of the Week
GBHackers weekly digest rounds up 50 stories including Microsoft's 973-CVE patch drop, exploited Cisco FMC flaws, and Claude agent attacks.
GBHackers' September 7-12, 2026 newsletter summarizes the 50 biggest cybersecurity stories of the week. Highlights include Microsoft patching a record 973 CVEs with two exploited zero-days, active exploitation of Cisco FMC, Check Point VPN and Ivanti flaws, China-linked crews chaining Chrome and Windows zero-days, AI agents mass-exploiting PaperCut to compromise 440 servers, and the emergence of Panzer cross-platform ransomware. It also covers Anthropic and OpenAI agentic AI incidents and CrowdStrike's SafeMind launch.
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Beyond the Perimeter: Building Resilience Against Cloud and SaaS Supply-Chain Attacks
ShinyHunters exploited an Oracle PeopleSoft zero-day to steal data and extort roughly 100 organizations, including the Council of Europe, for up to $2.3M.
Between May and early June 2026, the ShinyHunters group exploited a critical zero-day in Oracle PeopleSoft across about 100 organizations and 300 instances worldwide, per reports cited by The Register. Stolen records included employee and student personal data, payroll, tax, financial and health information, plus immigration and passport documents. AgentCypher.ai estimates extortion demands of $400,000 to $2.3 million per victim, typically in Bitcoin; the Council of Europe refused to pay. The article uses the incident to argue for Zero Trust, supply-chain risk management, rapid patching, encrypted distributed backups and defined recovery-time objectives.
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UK Council Attack Linked to Mass Exploitation of SonicWall Flaw
Hunt.io links a UK council attack to mass exploitation of SonicWall SMA1000 flaw CVE-2026-15409 (CVSS 10.0), enabling credential and Active Directory theft.
Hunt.io links, with moderate confidence, the July 17, 2026 attack on the Borough Council of King's Lynn and West Norfolk to mass exploitation of SonicWall SMA1000 appliances via CVE-2026-15409, an unauthenticated SSRF in the WorkPlace portal WebSocket proxy with CVSS 10.0. The operator adapted Rapid7's July 15 PoC into a 50-thread mass scanner within days and stole LDAP credentials for 534 Active Directory accounts across 160 domains, with nine environments losing SAM/LSA secrets and five losing full AD databases via DCSync. CISA added the flaw to its Known Exploited Vulnerabilities catalog and noted use in ransomware campaigns; targeting of ~200,000 Shodan-derived SonicWall addresses spanned government, healthcare, finance, universities, and manufacturing worldwide.
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Clop-Linked Windchill Web Shell Decrypts Credentials and Maps Engineering Data
ReliaQuest details a bespoke JSP web shell that Clop deploys on hacked PTC Windchill and FlexPLM servers after exploiting CVE-2026-12569.
ReliaQuest analyzed a custom Java web shell planted on vulnerable PTC Windchill and FlexPLM servers following exploitation of CVE-2026-12569 (CVSS 9.3). The implant decrypts Windchill keystore credentials including the LDAP manager password, enumerates the file vault for engineering data, and loads attacker-supplied Java classes in memory for post-exploitation. Commands let operators read and delete files, exfiltrate results, and deliver follow-on payloads such as ransomware. Ransom-ISAC, eCrime.ch and Defused previously attributed the campaign to the Clop data-theft extortion group.
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⚡ Weekly Recap: SharePoint 0-Day, Chrome Exploit, macOS Spyware, NVIDIA Toolkit RCE and More
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‘Wormable’ Flaw Leads January 2022 Patch Tuesday
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