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.

Vulnerability in Tanium Server

CVE-2026-9156

Tanium addressed a denial of service vulnerability in Tanium Server.

EPSS: 0.000 (10.6th percentile) — read the EPSS interpretation.

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.

Affected products

Tanium Server
Tanium Server — versions 7.6.4.0, 7.7.3.0, 7.8.2.0

Weakness classification (CWE)

CWE-772 — Missing Release of Resource after Effective Lifetime

References

3938794e-25f5-4123-a1ba-5cbd7f104512 (Vendor Advisory)

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.