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Vulnerabilities

Vulnerability · CVE-2025-15321

Tanium addressed an improper input validation vulnerability in Tanium Appliance.

Published Feb 5, 2026 · catalog updated Feb 6, 2026 · Tanium Tanium Appliance

Last checked Nov 4, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2025-15321. EPSS is 0.27%. Act only if a listed version of Tanium Tanium Appliance is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
Low2.7
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.27%
Remediation
Version ranges on file
Affected products
vendor Tanium Tanium Appliance 1.8.5.0 <1.8.5.0227

Tanium addressed an improper input validation vulnerability in Tanium Appliance.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor Tanium Tanium Appliance 1.8.5.0 <1.8.5.02271.8.5.0 <1.8.5.0227

How to fix CVE-2025-15321

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-15321. EPSS is 0.27%. Act only if a listed version of Tanium Tanium Appliance is installed.

Which versions are affected?

Compare what you have installed with Tanium Tanium Appliance 1.8.5.0 <1.8.5.0227 1.8.5.0 <1.8.5.0227. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.27%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Feb 5, 2026 · EUVD

    Detected

    Tanium addressed an improper input validation vulnerability in Tanium Appliance.

  2. Feb 6, 2026 · EUVD

    Updated

    Tanium addressed an improper input validation vulnerability in Tanium Appliance.

Sources

  • CVE.orgVulnerability recordCVE-2025-15321

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-15321

    30-day exploitation probability 0.27%

    first.org
  • EUVDVulnerability recordEUVD-2025-206840

    Tanium addressed an improper input validation vulnerability in Tanium Appliance.

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Nov 4, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSNov 4, 2026
  • CVE.orgNov 4, 2026
  • EUVDNov 3, 2026