Vulnerability · Published Jan 28, 2026 · Assigned by VulnCheck

CVE-2020-36969M/Monit 3.7.4 - Privilege Escalation

High 8.8

In plain English

A high-severity incorrect authorization in M/Monit from Tildeslash Ltd.. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 43% of all known vulnerabilities).

Severity (CVSS 3.1)8.8High
Exploit odds (30 days)0.5%top 57.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known

Official description

M/Monit 3.7.4 contains a privilege escalation vulnerability that allows authenticated users to modify user permissions by manipulating the admin parameter. Attackers can send a POST request to the /api/1/admin/users/update endpoint with a crafted payload to grant administrative access to a standard user account.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12monitno fix listedDEBIAN-CVE-2020-36969
Debian:13monitno fix listedDEBIAN-CVE-2020-36969
Debian:14monitno fix listedDEBIAN-CVE-2020-36969
Ubuntu:24.04:LTSmonitno fix listedUBUNTU-CVE-2020-36969
Ubuntu:25.10monitno fix listedUBUNTU-CVE-2020-36969
Ubuntu:26.04:LTSmonitno fix listedUBUNTU-CVE-2020-36969
Ubuntu:26.10monitno fix listedUBUNTU-CVE-2020-36969

Affected products (as reported)

VendorProductVersions
Tildeslash Ltd. M/Monit 3.7.4

Weakness: CWE-863 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References