CVE-2025-12771

High

Description

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.

SeverityHigh

CVSS7.8

Exploit probability—

Product

Ibm Concert

PublishedDec 26, 2025

First seenDec 26, 2025

Weakness typeCWE-119Memory buffer bounds error

How to fix

Update

ibm concert2.2.0 or later

Patches

ibm.com/support/pages/node/7255549

Affected products

Product	Affected versions	Fixed in
ibm concert	1.0.0 ≤ v < 2.2.0	2.2.0

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