CVE-2026-121565
No known exploitation. EPSS puts it in the 6th percentile. Fixed versions are out.
No public exploit knownFix5 products15 fixed builds listed below
No ready-made check. Neither Nuclei nor OpenVAS has one for this CVE yet.
What to do
Find your product and version, then upgrade to the build on the right.
- Tanium TanOSAffected: ≥ 1.8.5, < 1.8.5.0326Upgrade to: 1.8.5.0326Affected: ≥ 1.8.6, < 1.8.6.0193Upgrade to: 1.8.6.0193Affected: ≥ 1.9.0, < 1.9.0.0089Upgrade to: 1.9.0.0089Stated by: CVE record
- Tanium AssetAffected: ≥ 1.33, < 1.33.334Upgrade to: 1.33.334Affected: ≥ 1.36, < 1.36.182Upgrade to: 1.36.182Affected: ≥ 1.39, < 1.39.164Upgrade to: 1.39.164Stated by: CVE record
- Tanium ComplyAffected: ≥ 2.32, < 2.32.275Upgrade to: 2.32.275Affected: ≥ 2.35, < 2.35.337Upgrade to: 2.35.337Affected: ≥ 2.37, < 2.37.347Upgrade to: 2.37.347Stated by: CVE record
- Tanium ConnectAffected: ≥ 5.29, < 5.29.272Upgrade to: 5.29.272Affected: ≥ 5.37, < 5.37.177Upgrade to: 5.37.177Affected: ≥ 5.47, < 5.47.135Upgrade to: 5.47.135Stated by: CVE record
- Tanium Integrity MonitorAffected: ≥ 3.6, < 3.6.608Upgrade to: 3.6.608Affected: ≥ 3.7, < 3.7.383Upgrade to: 3.7.383Affected: ≥ 3.8, < 3.8.362Upgrade to: 3.8.362Stated by: CVE record
Versions as the sources state them. 8 more products have version data. Full version matrix after sign-in
What it is
From the CVE record
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.
In plain language
No plain-language summary for this CVE yet.
Exploitation
Where each signal puts this CVE on the scale from published to confirmed exploited.
- CISA KEV
Not in the catalog. CISA has not confirmed exploitation.
- Public exploits
No public exploit or proof of concept found in the sources we track.
- EPSS
0.2% chance of exploitation activity in the next 30 days, which ranks it in the 6th percentile of scored CVEs.
Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.
Lifecycle
5 events over 1 day, from the signal feeds we watch.
- Record updated
- Publishedweakness classified, att&ck mapped, record updated
Affected products
- TanOSSecurity Products / vuln-mgmt-scanner
- AssetSecurity Products / siem-soar
- ComplySecurity Products / siem-soar
- ConnectSecurity Products / siem-soar
- Integrity MonitorSecurity Products / siem-soar
- Health CheckSecurity Products / siem-soar
- Endpoint Configuration Toolset SolutionSecurity Products / siem-soar
- PatchSecurity Products / siem-soar
And 5 more affected products. See all after sign-in
Technical detail
CVSS 3.1 vector
Open in the CVSS calculatorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Scored 7.4 by NVD.
How it is reached
- Attack Vector NetworkExploitable remotely over the network without any special conditions
- Attack Complexity HighRequires specific conditions like a race condition or non-default configuration
- Privileges Required NoneNo authentication required — anyone can exploit this
- User Interaction NoneNo user interaction needed — fully automated exploitation
Scope
- Scope UnchangedImpact is limited to the vulnerable component itself
Impact if exploited
- Confidentiality HighTotal information disclosure — all data in the component is compromised
- Integrity HighTotal loss of integrity — attacker can modify any data in the component
- Availability NoneNo availability impact
Weaknesses
ATT&CK techniques
Mapped from the weaknesses above (CWE to ATT&CK), not observed in attacks.
Sources
References in the record
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