What is CVE-2025-15312?

CVE-2025-15312 is a medium-severity vulnerability in Tanium Appliance, classified under Improper Encoding or Escaping of Output. CVSS score: 6.6/10. Published 2026-02-05.

How severe is CVE-2025-15312?

Medium severity. CVSS v3 base score is 6.6 out of 10.

Vulnerability in Tanium Appliance

CVE-2025-15312

Tanium addressed an improper output sanitization vulnerability in Tanium Appliance.

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

CVSS v3 metric

CVSS v3 base score 6.6 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.004 (26.5th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 26th percentile — 26.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.004 · change: +0.000

Affected products

Tanium Appliance — versions 1.8.3.0, 1.8.4.0
Tanium Tanos

Weakness classification (CWE)

CWE-116 — Improper Encoding or Escaping of Output

References

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

Frequently asked questions

What is CVE-2025-15312?: CVE-2025-15312 is a medium-severity vulnerability in Tanium Appliance, classified under Improper Encoding or Escaping of Output. CVSS score: 6.6/10. Published 2026-02-05.
How severe is CVE-2025-15312?: Medium severity. CVSS v3 base score is 6.6 out of 10.