What is CVE-2025-36159?

CVE-2025-36159 is a medium-severity vulnerability in IBM Concert, classified under Improper Output Neutralization for Logs. CVSS score: 6.2/10. Published 2025-11-20.

How severe is CVE-2025-36159?

Medium severity. CVSS v3 base score is 6.2 out of 10.

Vulnerability in IBM Concert

CVE-2025-36159

IBM Concert 1.0.0 through 2.0.0 could allow a local user to forge log files to impersonate other users or hide their identity due to improper neutralization of output.

Published 2025-11-20 · last modified 2026-10-18.

CVSS v3 metric

CVSS v3 base score 6.2 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.001 (1.8th percentile), scored 2026-10-22.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 2nd percentile — 1.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.001 · newest: 0.001 · change: +0.000

Affected products

IBM Concert — versions 1.0.0

Weakness classification (CWE)

CWE-117 — Improper Output Neutralization for Logs

References

www.ibm.com/support/pages/node/7252019 (vendor-advisory, patch, Vendor Advisory)

Frequently asked questions

What is CVE-2025-36159?: CVE-2025-36159 is a medium-severity vulnerability in IBM Concert, classified under Improper Output Neutralization for Logs. CVSS score: 6.2/10. Published 2025-11-20.
How severe is CVE-2025-36159?: Medium severity. CVSS v3 base score is 6.2 out of 10.