VulnerabilityDeferred

CVE-2026-77645

A critical remote code execution (RCE) vulnerability has been reported in PTC Windchill and PTC FlexPLM.

CRITICAL 9.2EPSS 0.47%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.47%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

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.

CVSS 4.0: 9.2 CRITICALCVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
EPSS: 0.47% probability · 40th percentile
CISA KEV: Not listed
Weakness: CWE-20, CWE-502
Source: 0b655efc-079c-4cb9-9e8d-164871239f4e

References

https://www.ptc.com/en/support/article/CS474826

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.