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CVE-2026-12569 is a critical remote code execution vulnerability affecting PTC Windchill PDMLink and PTC FlexPLM, including all CPS versions and releases prior to 11.0 M030, with additional reporting indicating affected branches also included later maintained release lines before vendor-fixed builds were issued. The flaw is described as deserialization of untrusted data and has also been characterized in public tracking as improper input validation. A remote attacker can send a crafted network request to a vulnerable, exposed application and trigger unsafe processing of attacker-controlled serialized data, resulting in arbitrary code execution without authentication. Reporting on observed exploitation indicates the issue was abused against Internet-exposed deployments and used to install server-side JSP web shells for follow-on access and data theft.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
172 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A critical improper input validation vulnerability affecting Internet-exposed PTC Windchill and PTC FlexPLM instances that Clop exploited in data theft attacks.
A vulnerability in PTC Windchill and FlexPLM product lifecycle management software that Cl0p is exploiting to steal data from organizations running unpatched systems.
A critical improper input validation vulnerability affecting PTC Windchill and PTC FlexPLM PLM platforms, reportedly exploited by Clop to compromise exposed instances and exfiltrate data.
A critical improper input validation vulnerability affecting PTC Windchill and FlexPLM that Clop exploited in data-theft attacks against exposed instances, prompting patches, emergency warnings, and KEV listing.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.