Buffer overflow in Wazuh
CVE-2026-112335
Wazuh agent from 1.0.0 before 4.14.9 contains a stack-based buffer overflow in the logcollector snort-full log reader that miscalculates remaining buffer space in read_snortfull(). Attackers who write crafted multi-line content to a monitored snort-full log can overflow the 65,280-byte stack buffer, crashing the agent or overwriting an SEH handler on 32-bit Windows agents running as SYSTEM.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- wazuh v4.14.9 Release Notes (release-notes)
- GitHub Security Advisory (GHSA-3gq8-gg8f-5h8h) (vendor-advisory)
- VulnCheck Advisory: Wazuh Agent 1.0.0 before 4.14.9 Stack Buffer Overflow via read_snortfull (third-party-advisory)
Frequently asked questions
- What is CVE-2026-112335?
- CVE-2026-112335 is a medium-severity vulnerability in Wazuh, classified under Stack-based Buffer Overflow. CVSS score: 5.5/10. Published 2026-11-06.
- How severe is CVE-2026-112335?
- Medium severity. CVSS v3 base score is 5.5 out of 10.