CVE-2026-19477 Stack-based Buffer Overflow Vulnerability in Linux (uldaq)
A stack-based buffer overflow in the MCC Universal Library for Linux allows attackers to execute arbitrary code or disclose sensitive information.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-19477?
CVE-2026-19477 is a high-severity memory corruption vulnerability in MCC Universal Library for Linux (uldaq), published on 17 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
There is stack-based buffer overflow vulnerability recently discovered in MCC Universal Library for Linux (uldaq). This may result in information disclosure or arbitrary code execution. This vulnerability affects MCC Universal Library for Linux (uldaq) v1.2.1 and prior versions.
Weakness: CWE-121
Which versions are affected by CVE-2026-19477?
How do I fix CVE-2026-19477?
No fix has been published for CVE-2026-19477 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-19477 being exploited?
There is no known exploitation of CVE-2026-19477 in the wild and no public exploit code.
Sources
Also known as GHSA-9jr3-33mw-g6jc, GHSA-j395-f5mc-4872.