CVE-2025-12771: IBM Concert 1.0.0 through 2.1.0 is vulnerable to a stack-based buffer overflow, caused by improper bounds checking. A…
CVE-2025-12771 · Severity: high · CVSS 7.8 · Published 2025-12-26
IBM Concert 1.0.0 through 2.1.0 is vulnerable to a stack-based buffer overflow, caused by improper bounds checking. A local user could overflow the buffer and execute arbitrary code on the system.
No. Junglewise Threat Intelligence has no report of CVE-2025-12771 being exploited in the wild.
How severe is CVE-2025-12771?
High severity, with a CVSS score of 7.8, published 26 December 2025.
Which products and versions are affected?
IBM Concert. The advisory does not name versions.
Is there a fix for CVE-2025-12771?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
Am I affected by CVE-2025-12771?
Check whether you run IBM Concert. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.