Vulnerability record/PUBLISHED/Published Nov 3, 2026 22:17:22 UTC

CVE-2026-121565

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.

Base score7.4/ 10

SeverityHighCVSS 3.1

Exploitability / impact

CVSS metric breakdown

Vector-derived attributes

Base severityHigh

Attack vectorNetworkAV

Attack complexityHighAC

Privileges requiredNonePR

User interactionNoneUI

ScopeUnchangedS

Confidentiality impactHighC

Integrity impactHighI

Availability impactNoneA

CVSS vector stringCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

CVSS communicates standardized severity and impact characteristics. It does not establish whether a system is exploitable in your specific environment.

Record context

CVE Numbering AuthorityTanium

Last updatedNov 4, 2026 11:24:05 UTC

PublishedNov 3, 2026 22:17:22 UTC

ReservedNov 3, 2026 14:58:47 UTC