9.3

CVE-2026-4681: ptc flexplm Code Injection

CVSS: 9.3v4.0CriticalAwaiting analysis
Published 23-03-2026Last modified 24-03-2026
Open JSON

Vulnerability summary

CVE-2026-4681 is a critical (CVSS 9.3) Code Injection vulnerability in ptc flexplm. EPSS estimates a 0.79% chance of exploitation in the next 30 days, higher than 55.8% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.3/10
010
Critical · v4.0 (CVE.org)
EPSS score
0.79%
0%100%
Low · +0.04 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 23-03-2026
    PublishedVulnerability first disclosed.
  2. 24-03-2026
    Last modifiedVulnerability information updated.

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. This issue affects Windchill PDMLink: 11.0 M030, 11.1 M020, 11.2.1.0, 12.0.2.0, 12.1.2.0, 13.0.2.0, 13.1.0.0, 13.1.1.0, 13.1.2.0, 13.1.3.0; FlexPLM: 11.0 M030, 11.1 M020, 11.2.1.0, 12.0.0.0, 12.0.2.0, 12.0.3.0, 12.1.2.0, 12.1.3.0, 13.0.2.0, 13.0.3.0.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.79%

Chance of exploitation in the next 30 days

Percentile

56%

Versus all other CVEs

30-day change

+0.04 pp

From 0.76% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.79%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Ptc2 products
  • flexplm11.0 M030 | 11.1 M020 | 11.2.1.0 | 12.0.0.0 | 12.0.2.0 | 12.0.3.0 | 12.1.2.0 | 12.1.3.0 | 13.0.2.0 | 13.0.3.0
  • windchill_pdmlink11.0 M030 | 11.1 M020 | 11.2.1.0 | 12.0.2.0 | 12.1.2.0 | 13.0.2.0 | 13.1.0.0 | 13.1.1.0 | 13.1.2.0 | 13.1.3.0

1 vendor · 2 products

References

1 links