What is CVE-2025-12771?

CVE-2025-12771 is a high-severity vulnerability in Ibm Concert, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.8/10. Published 2025-12-26.

How severe is CVE-2025-12771?

High severity. CVSS v3 base score is 7.8 out of 10.

Buffer overflow in Ibm Concert

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.

Vulnerability class: Buffer Overflow

EPSS: 0.000 (0.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Ibm Concert — versions 1.0.0

Weakness classification (CWE)

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer

References

www.ibm.com/support/pages/node/7255549 (vendor-advisory, patch)

Frequently asked questions

What is CVE-2025-12771?: CVE-2025-12771 is a high-severity vulnerability in Ibm Concert, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.8/10. Published 2025-12-26.
How severe is CVE-2025-12771?: High severity. CVSS v3 base score is 7.8 out of 10.