CVE-2025-12771

HIGH

Published Dec 26, 2025 Modified Dec 29, 2025 CWE-119

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.

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CVSS v3.1 Score

7.8

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness Type (CWE)

CWE-119 Buffer Overflow

Affected Products

Vendor	Product	Versions
ibm	concert	1.0.0 — 2.2.0

References

Advisories & Patches

https://www.ibm.com/support/pages/node/7255549

Frequently Asked Questions

What is 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 local user could overflow the buffer and execute arbitrary code on the system. It has a CVSS v3.1 base score of 7.8 (HIGH).

How severe is CVE-2025-12771? +

CVE-2025-12771 has a CVSS v3.1 score of 7.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-12771? +

CVE-2025-12771 affects products from ibm, specifically: concert. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-12771? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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