Vulnerability in Tanium Server

CVE-2026-9156

Tanium addressed a denial of service vulnerability in Tanium Server.

Published · last modified .

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.004 (34.4th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 34th percentile — 34.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-9156: held from 0.002 to 0.004.

EPSS over last 30 days · oldest: 0.002 · newest: 0.004 · change: +0.002

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-9156?
CVE-2026-9156 is a medium-severity vulnerability in Tanium Server, classified under Missing Release of Resource after Effective Lifetime. CVSS score: 6.5/10. Published 2026-05-27.
How severe is CVE-2026-9156?
Medium severity. CVSS v3 base score is 6.5 out of 10.