Tanium addressed an improper input validation vulnerability in Tanium Appliance.
Priority LOW 13CWE-426Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution, Security bypass
- Confidentiality · integrity · availability
- Low · None · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-426 and CWE-863.
Summary
Tanium addressed an improper input validation vulnerability in Tanium Appliance.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00272 19th percentileScored 2026-11-07
Fix Fixed Tanium Appliance (Tanium): 1.8.3.0196, 1.8.5.0199, 1.8.5.0227
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Tanium | Tanium Appliance | 1.8.3.0 to before 1.8.3.0196; 1.8.5.0 to before 1.8.5.0199; 1.8.5.0 to before 1.8.5.0227 | 1.8.3.0196, 1.8.5.0199, 1.8.5.0227 | Patch available | CNA |
- Tanium Appliance VendorTanium Affected 1.8.3.0 to before 1.8.3.0196; 1.8.5.0 to before 1.8.5.0199; 1.8.5.0 to before 1.8.5.0227 Fixed in 1.8.3.0196, 1.8.5.0199, 1.8.5.0227 Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:tanium:tanos:*:*:*:*:*:*:*:* | 1.8.3 to before 1.8.3.0196; 1.8.4 to before 1.8.4.0199; 1.8.5 to before 1.8.5.0227 | Vulnerable | Tanium |
- cpe:2.3:o:tanium:tanos:*:*:*:*:*:*:*:* Versions 1.8.3 to before 1.8.3.0196; 1.8.4 to before 1.8.4.0199; 1.8.5 to before 1.8.5.0227 Vulnerable ·Tanium
Remediation
- Fix · CNA Tanium Appliance (Tanium) Fixed in 1.8.3.0196, 1.8.5.0199, 1.8.5.0227
Timeline
- 2026-10-02 Threatist record created from CVE-2025-15321
- 2026-10-03 Alias added: GHSA-hjqh-mfgj-vjqf
References
Advisory 1
More Tanium Tanos vulnerabilities
- TI-2025-13964 Tanium addressed an unauthorized code execution vulnerability in Tanium Appliance. CVSS 3.1HIGH 7.8
- TI-2025-13965 Tanium addressed an improper output sanitization vulnerability in TanOS. CVSS 3.1HIGH 7.2
- TI-2025-12089 Tanium addressed an arbitrary file deletion vulnerability in TanOS. CVSS 3.1MEDIUM 6.0
- TI-2026-02225 Tanium addressed an insertion of sensitive information into log file vulnerability in TanOS. CVSS 3.1MEDIUM 5.3
- TI-2025-13976 Tanium addressed an improper certificate validation vulnerability in Tanium Appliance. CVSS 3.1LOW 3.7
Sources
- CVE-2025-15321 · CVE Program
- CVE-2025-15321 · NVD
- FIRST EPSS
- GHSA-hjqh-mfgj-vjqf · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences