What is CVE-2025-55076?

CVE-2025-55076 is a medium-severity vulnerability in Apple macOS, classified under Improper Privilege Management. CVSS score: 6.2/10. Published 2025-12-03.

How severe is CVE-2025-55076?

Medium severity. CVSS v3 base score is 6.2 out of 10.

Privilege escalation in Apple macOS

CVE-2025-55076

A local privilege escalation vulnerability exists in the InstallationHelper service included with Plugin Alliance Installation Manager v1.4.0 for macOS. The service accepts unauthenticated XPC connections and executes input via system(), which may allow a local user to execute arbitrary commands with root privileges.

Vulnerability class: Privilege Escalation

EPSS: 0.002 (8.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.2 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

Affected products

Apple Macos
Plugin-alliance Installation_manager — versions 1.4.0
N/a — versions n/a

Weakness classification (CWE)

CWE-269 — Improper Privilege Management

References

cve@mitre.org (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2025-55076?: CVE-2025-55076 is a medium-severity vulnerability in Apple macOS, classified under Improper Privilege Management. CVSS score: 6.2/10. Published 2025-12-03.
How severe is CVE-2025-55076?: Medium severity. CVSS v3 base score is 6.2 out of 10.