Vulnerability · Published Aug 20, 2026 · Assigned by PTC
CVE-2026-77645Critical Remote Code Execution (RCE) vulnerability reported in Windchill
Critical 9.2
In plain English
A critical-severity improper input validation in FlexPLM from PTC. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 47% of all known vulnerabilities).
Severity (CVSS 4.0)9.2Critical
Exploit odds (30 days)0.6%top 53.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
A critical remote code execution (RCE) vulnerability has been reported in PTC Windchill and PTC FlexPLM. The vulnerability may be exploited through the deserialization of untrusted data.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| PTC | Windchill PDMLink | 11.0 M03011.1 M02011.2.1.012.0.2.012.1.2.013.0.2.013.1.0.013.1.1.0 |
| PTC | FlexPLM | 11.0 M03011.1 M02011.2.1.012.0.0.012.0.2.012.0.3.012.1.2.012.1.3.0 |
Weakness: CWE-20, CWE-502 · Vector: CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L/AU:Y/R:U/V:C/RE:M/U:Red
References
- https://www.ptc.com/en/support/article/CS474826 vendor-advisory, mitigation, permissions-required