What is CVE-2026-108303?

CVE-2026-108303 is a high-severity vulnerability in Tanium Certificate Manager, classified under Command Injection. CVSS score: 8.8/10. Published 2026-10-27.

How severe is CVE-2026-108303?

High severity. CVSS v3 base score is 8.8 out of 10.

RCE in Tanium Certificate Manager

CVE-2026-108303

Tanium addressed an unauthorized code execution vulnerability in Certificate Manager.

Vulnerability class: Command Injection (OS Command Injection)

Published 2026-10-27.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Tanium Certificate Manager

Weakness classification (CWE)

CWE-77 — Command Injection

References

3938794e-25f5-4123-a1ba-5cbd7f104512

Frequently asked questions

What is CVE-2026-108303?: CVE-2026-108303 is a high-severity vulnerability in Tanium Certificate Manager, classified under Command Injection. CVSS score: 8.8/10. Published 2026-10-27.
How severe is CVE-2026-108303?: High severity. CVSS v3 base score is 8.8 out of 10.