CVE-2026-77644 Critical Bypass Access Control Vulnerability Reported for Windchill Risk and Reliability (WRR) Enterprise Edition
Attackers can bypass access controls in PTC Windchill Risk and Reliability Enterprise Edition, potentially gaining unauthorized access to protected resources.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-77644?
CVE-2026-77644 is a critical authentication bypass vulnerability in PTC Windchill Risk and Reliability Enterprise Edition (Formerly Relex), published on 20 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A critical bypass access control vulnerability has been reported in PTC Windchill Risk and Reliability (WRR) Enterprise Edition.
Which versions are affected by CVE-2026-77644?
How do I fix CVE-2026-77644?
No fix has been published for CVE-2026-77644 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-77644 being exploited?
There is no known exploitation of CVE-2026-77644 in the wild and no public exploit code.
Sources
Also known as GHSA-5hvp-9mcx-5245.