IBM Concert 1.0.0-2.1.0 Stack-Based Buffer Overflow (buf overrun)
CVE-2025-12771 Published on December 26, 2025
IBM Concert Software Improper Restriction of Operations within the Bounds of a Memory Buffer.
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.
Vulnerability Analysis
CVE-2025-12771 can be exploited with local system access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to be very high.
Weakness Type
What is a Buffer Overflow Vulnerability?
The software performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer.
CVE-2025-12771 has been classified to as a Buffer Overflow vulnerability or weakness.
Products Associated with CVE-2025-12771
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Affected Versions
IBM Concert:- Version 1.0.0, <= 2.1.0 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.