CVE-2026-77645

CRITICAL
INFO Priority: 0.05 BB Relevance: 79/100
Published: 2026-08-20 Modified: 2026-10-26 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction Conf. Impact Integ. Impact

CVSS Vector Breakdown

AV: Network
AC: High
PR: None
UI: None
S: X
AT: None
VC: High
VI: High
VA: High

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.

Weakness Classification (2)

Bug Bounty Relevance

79 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

9.2 / 10.0 v4.0
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:U/V:C/RE:M/U:Red

EPSS — Exploitation Probability

0.56%
Raw Score 0.005590
Percentile 46.5%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00559
2026-10-28
0.00559

Intelligence Sources

nvd ref →