What is CVE-2026-114031?

CVE-2026-114031 is a high-severity vulnerability in Illumio Core Ven, classified under Incorrect Permission Assignment for Critical Resource. CVSS score: 7.8/10. Published 2026-11-09.

How severe is CVE-2026-114031?

High severity. CVSS v3 base score is 7.8 out of 10.

Vulnerability in Illumio Core Ven

CVE-2026-114031

Incorrect permission assignment allows local privilege escalation to SYSTEM on affected releases of the Illumio VEN for Windows. Code execution as NT AUTHORITY\LOCAL SERVICE on the Windows host is required to exploit this vulnerability. The flaw exists within the VEN installer, which grants LOCAL SERVICE full access to the VEN data and installation folders, whose configuration and state files are read and trusted by the SYSTEM-privileged illumio-ven-ctl component. An attacker can leverage this vulnerability to modify the VEN configuration so that illumio-ven-ctl executes an injected command in the context of the SYSTEM account.

Published 2026-11-09.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/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

Illumio Core Ven

Weakness classification (CWE)

CWE-732 — Incorrect Permission Assignment for Critical Resource

References

product-docs-repo.illumio.com/Tech-Docs/Security+Advisories/out/en/security-adv… (vendor-advisory)

Frequently asked questions

What is CVE-2026-114031?: CVE-2026-114031 is a high-severity vulnerability in Illumio Core Ven, classified under Incorrect Permission Assignment for Critical Resource. CVSS score: 7.8/10. Published 2026-11-09.
How severe is CVE-2026-114031?: High severity. CVSS v3 base score is 7.8 out of 10.