What is CVE-2026-121565?

CVE-2026-121565 is a high-severity vulnerability in Tanium Asset, classified under Improper Certificate Validation. CVSS score: 7.4/10. Published 2026-11-03.

How severe is CVE-2026-121565?

High severity. CVSS v3 base score is 7.4 out of 10.

Vulnerability in Tanium Asset

CVE-2026-121565

Tanium addressed an improper certificate validation vulnerability in multiple products. Products have been updated to distrust several intermediate CA certificates associated with compromised private keys.

Vulnerability class: Improper Certificate Validation

Published 2026-11-03 · last modified 2026-11-03.

CVSS v3 metric

CVSS v3 base score 7.4 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Weakness classification (CWE)

CWE-295 — Improper Certificate Validation

References

3938794e-25f5-4123-a1ba-5cbd7f104512

Frequently asked questions

What is CVE-2026-121565?: CVE-2026-121565 is a high-severity vulnerability in Tanium Asset, classified under Improper Certificate Validation. CVSS score: 7.4/10. Published 2026-11-03.
How severe is CVE-2026-121565?: High severity. CVSS v3 base score is 7.4 out of 10.