Vulnerability · Published Oct 13, 2026 · Assigned by VulnCheck

CVE-2026-74034Wazuh 4.1.0 before 4.14.8 Arbitrary File Read via upgrade_custom Command

High 7.5

In plain English

A high-severity missing authorization in wazuh-manager from Wazuh. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 38% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code.

Severity (CVSS 3.1)7.5High

Exploit odds (30 days)0.4%top 62.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack tooling1Public PoC

Official description

Wazuh from 4.1.0 before 4.14.8 contains a missing origin check in wm_agent_upgrade that allows enrolled agents to issue upgrade_custom commands with attacker-controlled file_path. Attackers can inject an upgrade_custom message over the agent channel to read arbitrary files as root, exfiltrating /etc/shadow and client.keys.

Affected products (as reported)

Vendor	Product	Versions
Wazuh	wazuh-manager	4.1.0 – before 4.14.8

Weakness: CWE-862 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References

GitHub Security Advisory (GHSA-r7hm-43xr-477j) vendor-advisory
Wazuh v4.14.8 Release Notes patch, release-notes
VulnCheck Advisory: Wazuh 4.1.0 before 4.14.8 Arbitrary File Read via upgrade_custom Command third-party-advisory