Vulnerability · Published Nov 3, 2026 · Assigned by Tanium
CVE-2026-121565Tanium addressed an improper certificate validation vulnerability in multiple products
High 7.4
In plain English
A high-severity improper certificate validation in Asset from Tanium. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 6% of all known vulnerabilities).
Severity (CVSS 3.1)7.4High
Exploit odds (30 days)0.2%top 94.5% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Tanium | TanOS | 1.8.5 – before 1.8.5.03261.8.6 – before 1.8.6.01931.9.0 – before 1.9.0.0089 |
| Tanium | Asset | 1.33 – before 1.33.3341.36 – before 1.36.1821.39 – before 1.39.164 |
| Tanium | Comply | 2.32 – before 2.32.2752.35 – before 2.35.3372.37 – before 2.37.347 |
| Tanium | Connect | 5.29 – before 5.29.2725.37 – before 5.37.1775.47 – before 5.47.135 |
| Tanium | Integrity Monitor | 3.6 – before 3.6.6083.7 – before 3.7.3833.8 – before 3.8.362 |
| Tanium | Health Check | 1.13 – before 1.13.653 |
| Tanium | Endpoint Configuration Toolset Solution | 1.51 – before 1.51.611.59 – before 1.59.511.71 – before 1.71.26 |
| Tanium | Patch | 3.24 – before 3.24.3283.28 – before 3.28.3463.32 – before 3.32.383 |
| Tanium | Performance | 1.25 – before 1.25.196 |
| Tanium | Reputation | 6.6 – before 6.6.1506.7 – before 6.7.1436.8 – before 6.8.167 |
| Tanium | Reveal | 2.4 – before 2.4.1092.5 – before 2.5.166 |
| Tanium | Threat Response | 4.9 – before 4.9.4804.12 – before 4.12.3534.17 – before 4.17.333 |
| Tanium | Provision Host | 10.4.100 – before 10.4.10010.8.115 – before 10.8.11510.9.113 – before 10.9.11310.10.189 – before 10.10.18910.11.127 – before 10.11.127 |
Weakness: CWE-295 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N