Low severity · published Feb 5, 2026
CVE-2025-15321
Tanium addressed an improper input validation vulnerability in Tanium Appliance.
2.7
CVSS
0.3%
EPSS
No
On KEV
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 20% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
TA
Tanium Appliance · Tanium
1.8.3.0 before 1.8.3.0196; 1.8.5.0 before 1.8.5.0199; 1.8.5.0 before 1.8.5.0227 · source: vendor
TA
Tanos · Tanium
1.8.3 before 1.8.3.0196; 1.8.4 before 1.8.4.0199; 1.8.5 before 1.8.5.0227 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-15321
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-15321
Vendor Advisory
https://security.tanium.com/TAN-2025-024
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