CVE-2026-121565
Tanium addressed an improper certificate validation vulnerability in multiple products
Tanium addressed an improper certificate validation vulnerability in multiple products. Products have been updated to distrust several intermediate CA certificates associated with compromised private keys.
Fixes and workarounds
No remediation reported in collected sources.
Missing remediation information is not evidence that no patch exists.
Affected products and versions
| Product | Versions | Authority |
|---|---|---|
| TanOS Tanium |
≥ 1.8.5; < 1.8.5.0326 (affected, custom) ≥ 1.8.6; < 1.8.6.0193 (affected, custom) ≥ 1.9.0; < 1.9.0.0089 (affected, custom) |
CNA: Tanium |
| Asset Tanium |
≥ 1.33; < 1.33.334 (affected, custom) ≥ 1.36; < 1.36.182 (affected, custom) ≥ 1.39; < 1.39.164 (affected, custom) |
CNA: Tanium |
| Comply Tanium |
≥ 2.32; < 2.32.275 (affected, custom) ≥ 2.35; < 2.35.337 (affected, custom) ≥ 2.37; < 2.37.347 (affected, custom) |
CNA: Tanium |
| Connect Tanium |
≥ 5.29; < 5.29.272 (affected, custom) ≥ 5.37; < 5.37.177 (affected, custom) ≥ 5.47; < 5.47.135 (affected, custom) |
CNA: Tanium |
| Integrity Monitor Tanium |
≥ 3.6; < 3.6.608 (affected, custom) ≥ 3.7; < 3.7.383 (affected, custom) ≥ 3.8; < 3.8.362 (affected, custom) |
CNA: Tanium |
| Health Check Tanium |
≥ 1.13; < 1.13.653 (affected, custom) | CNA: Tanium |
| Endpoint Configuration Toolset Solution Tanium |
≥ 1.51; < 1.51.61 (affected, custom) ≥ 1.59; < 1.59.51 (affected, custom) ≥ 1.71; < 1.71.26 (affected, custom) |
CNA: Tanium |
| Patch Tanium |
≥ 3.24; < 3.24.328 (affected, custom) ≥ 3.28; < 3.28.346 (affected, custom) ≥ 3.32; < 3.32.383 (affected, custom) |
CNA: Tanium |
| Performance Tanium |
≥ 1.25; < 1.25.196 (affected, custom) | CNA: Tanium |
| Reputation Tanium |
≥ 6.6; < 6.6.150 (affected, custom) ≥ 6.7; < 6.7.143 (affected, custom) ≥ 6.8; < 6.8.167 (affected, custom) |
CNA: Tanium |
| Reveal Tanium |
≥ 2.4; < 2.4.109 (affected, custom) ≥ 2.5; < 2.5.166 (affected, custom) |
CNA: Tanium |
| Threat Response Tanium |
≥ 4.9; < 4.9.480 (affected, custom) ≥ 4.12; < 4.12.353 (affected, custom) ≥ 4.17; < 4.17.333 (affected, custom) |
CNA: Tanium |
| Provision Host Tanium |
≥ 10.4.100; < 10.4.100 (affected, semver) ≥ 10.8.115; < 10.8.115 (affected, semver) ≥ 10.9.113; < 10.9.113 (affected, semver) ≥ 10.10.189; < 10.10.189 (affected, semver) ≥ 10.11.127; < 10.11.127 (affected, semver) |
CNA: Tanium |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 3.1 / 7.4 high |
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N | CNA: Tanium |
| 3.1 / 7.4 high |
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N | NVD: 3938794e-25f5-4123-a1ba-5cbd7f104512 |
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://security.tanium.com/TAN-2026-092CNA: Tanium
- https://security.tanium.com/TAN-2026-0923938794e-25f5-4123-a1ba-5cbd7f104512
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