What is CVE-2025-15321?

CVE-2025-15321 is a low-severity vulnerability in Tanium Appliance, classified under Untrusted Search Path. CVSS score: 2.7/10. Published 2026-02-05.

How severe is CVE-2025-15321?

Low severity. CVSS v3 base score is 2.7 out of 10.

Auth bypass in Tanium Appliance

CVE-2025-15321

Tanium addressed an improper input validation vulnerability in Tanium Appliance.

Published 2026-02-05 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 2.7 (Low). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.003 (15.9th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 16th percentile — 15.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.000

Affected products

Tanium Appliance — versions 1.8.3.0, 1.8.5.0
Tanium Tanos

Weakness classification (CWE)

References

3938794e-25f5-4123-a1ba-5cbd7f104512 (Vendor Advisory)

Frequently asked questions

What is CVE-2025-15321?: CVE-2025-15321 is a low-severity vulnerability in Tanium Appliance, classified under Untrusted Search Path. CVSS score: 2.7/10. Published 2026-02-05.
How severe is CVE-2025-15321?: Low severity. CVSS v3 base score is 2.7 out of 10.