CVE-2026-12569 PTC Windchill and FlexPLM Improper Input Validation
Attackers can achieve remote code execution in PTC Windchill and FlexPLM via unsafe deserialization of untrusted data.
- Exploited in the wild
- Since 25 Jun 2026
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-12569?
CVE-2026-12569 is a critical unsafe deserialization vulnerability in PTC FlexPLM, published on 18 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A critical remote code execution (RCE) vulnerability has been reported in PTC Windchill PDMlink and PTC FlexPLM. The vulnerability may be exploited through the deserialization of untrusted data. * This advisory also applies to all CPS versions * The identified vulnerability also impacts Windchill and FlexPLM releases prior to 11.0 M030
Which versions are affected by CVE-2026-12569?
It affects 2 products.
Products include Ptc Flexplm, Ptc Windchill Pdmlink.
How do I fix CVE-2026-12569?
No fix has been published for CVE-2026-12569 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 28 Jun 2026.
Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.
Is CVE-2026-12569 being exploited?
Yes. Attackers have exploited CVE-2026-12569 in the wild since at least 25 Jun 2026, including in ransomware campaigns.
Sources
Also known as GHSA-f345-wxwr-fxfh.