What is CVE-2025-64645?

CVE-2025-64645 is a high-severity vulnerability in Ibm Concert, classified under Time-of-check Time-of-use (TOCTOU) Race Condition. CVSS score: 7.7/10. Published 2025-12-26.

How severe is CVE-2025-64645?

High severity. CVSS v3 base score is 7.7 out of 10.

Vulnerability in Ibm Concert

CVE-2025-64645

IBM Concert 1.0.0 through 2.1.0 could allow a local user to escalate their privileges due to a race condition of a symbolic link.

Vulnerability class: TOCTOU (Time-of-Check to Time-of-Use)

EPSS: 0.000 (0.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.7 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.

Affected products

Ibm Concert — versions 1.0.0

Weakness classification (CWE)

CWE-367 — Time-of-check Time-of-use (TOCTOU) Race Condition

References

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

Frequently asked questions

What is CVE-2025-64645?: CVE-2025-64645 is a high-severity vulnerability in Ibm Concert, classified under Time-of-check Time-of-use (TOCTOU) Race Condition. CVSS score: 7.7/10. Published 2025-12-26.
How severe is CVE-2025-64645?: High severity. CVSS v3 base score is 7.7 out of 10.