What is CVE-2025-66150?

CVE-2025-66150 is a medium-severity vulnerability in Merkulove Appender, classified under Missing Authorization. CVSS score: 5.4/10. Published 2025-12-31.

How severe is CVE-2025-66150?

Medium severity. CVSS v3 base score is 5.4 out of 10.

Auth bypass in Merkulove Appender

CVE-2025-66150

Missing Authorization vulnerability in merkulove Appender appender allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Appender: from n/a through <= 1.1.1.

Vulnerability class: Broken Access Control

EPSS: 0.002 (7.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L.

Affected products

Merkulove Appender — versions 0

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

audit@patchstack.com (vdb-entry)

Frequently asked questions

What is CVE-2025-66150?: CVE-2025-66150 is a medium-severity vulnerability in Merkulove Appender, classified under Missing Authorization. CVSS score: 5.4/10. Published 2025-12-31.
How severe is CVE-2025-66150?: Medium severity. CVSS v3 base score is 5.4 out of 10.