Connect your agent
AdvisoriesCriticalCheck your lockfilePluginHow it worksPricing Connect your agent

CVE record · CVE-2026-121565

Tanium addressed an improper certificate validation vulnerability in multiple products

CVSS 7.4 HighEPSS 0.0016 · 5th percentile

Published by the CVE Program (CNA: Tanium) at 3 Nov 2026, 22:17 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
VendorProductVersions
Tanium TanOS
  • affected 1.8.5 to before 1.8.5.0326 custom
  • affected 1.8.6 to before 1.8.6.0193 custom
  • affected 1.9.0 to before 1.9.0.0089 custom
Tanium Asset
  • affected 1.33 to before 1.33.334 custom
  • affected 1.36 to before 1.36.182 custom
  • affected 1.39 to before 1.39.164 custom
Tanium Comply
  • affected 2.32 to before 2.32.275 custom
  • affected 2.35 to before 2.35.337 custom
  • affected 2.37 to before 2.37.347 custom
Tanium Connect
  • affected 5.29 to before 5.29.272 custom
  • affected 5.37 to before 5.37.177 custom
  • affected 5.47 to before 5.47.135 custom
Tanium Integrity Monitor
  • affected 3.6 to before 3.6.608 custom
  • affected 3.7 to before 3.7.383 custom
  • affected 3.8 to before 3.8.362 custom
Tanium Health Check
  • affected 1.13 to before 1.13.653 custom
Tanium Endpoint Configuration Toolset Solution
  • affected 1.51 to before 1.51.61 custom
  • affected 1.59 to before 1.59.51 custom
  • affected 1.71 to before 1.71.26 custom
Tanium Patch
  • affected 3.24 to before 3.24.328 custom
  • affected 3.28 to before 3.28.346 custom
  • affected 3.32 to before 3.32.383 custom
Tanium Performance
  • affected 1.25 to before 1.25.196 custom
Tanium Reputation
  • affected 6.6 to before 6.6.150 custom
  • affected 6.7 to before 6.7.143 custom
  • affected 6.8 to before 6.8.167 custom
Tanium Reveal
  • affected 2.4 to before 2.4.109 custom
  • affected 2.5 to before 2.5.166 custom
Tanium Threat Response
  • affected 4.9 to before 4.9.480 custom
  • affected 4.12 to before 4.12.353 custom
  • affected 4.17 to before 4.17.333 custom
Tanium Provision Host
  • affected 10.4.100 to before 10.4.100 semver
  • affected 10.8.115 to before 10.8.115 semver
  • affected 10.9.113 to before 10.9.113 semver
  • affected 10.10.189 to before 10.10.189 semver
  • affected 10.11.127 to before 10.11.127 semver
Identifiers
CVE-2026-121565
CNA
Tanium
Weakness (CWE)
CWE-295
Tags
Published
3 Nov 2026
Updated
4 Nov 2026

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

ScoreRatingCVSSVectorSource
7.4 High 3.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N CNA (Tanium)
  • CISA KEV Not listed.
  • EPSS 0.0016, the 5th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 3 Nov 2026, 22:17 UTC Confirmed by the CVE List
  2. 3 Nov 2026, 22:18 UTC First seen by agentprime
  3. 3 Nov 2026, 23:17 UTC Confirmed by NVD

Sources

References from the CNA

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.