CVE-2026-112335
Wazuh Agent 1.0.0 before 4.14.9 Stack Buffer Overflow via read_snortfull
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.
Fixes and workarounds
No remediation reported in collected sources.
Missing remediation information is not evidence that no patch exists.
Affected products and versions
| Product | Versions | Authority |
|---|---|---|
| wazuh wazuh wazuh/wazuh
github |
≥ 1.0.0; < 4.14.9 (affected, semver) 4.14.9 (unaffected, semver) Other versions: unaffected |
CNA: VulnCheck |
wazuh-agentwazuh-agent
|
>= 1.0.0 (affected, GitHub advisory range) | GitHub GHSA-3gq8-gg8f-5h8h |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 4.0 / 6.8 medium |
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N | CNA: VulnCheck |
| 3.1 / 5.5 medium |
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H | CNA: VulnCheck |
| 4.0 / 6.8 medium |
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X | NVD: [email protected] |
| 3.1 / 5.5 medium |
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H | NVD: [email protected] |
Exploit evidence
- https://github.com/wazuh/wazuh/security/advisories/GHSA-3gq8-gg8f-5h8h
exploit · ADP: CISA-ADP
References
- https://github.com/wazuh/wazuh/security/advisories/GHSA-3gq8-gg8f-5h8hCNA: VulnCheck · vendor-advisory
- https://github.com/wazuh/wazuh/releases/tag/v4.14.9CNA: VulnCheck · release-notes
- https://www.vulncheck.com/advisories/wazuh-agent-1.0.0-before-4.14.9-stack-buffer-overflow-via-read-snortfullCNA: VulnCheck · third-party-advisory
- https://github.com/wazuh/wazuh/security/advisories/GHSA-3gq8-gg8f-5h8hADP: CISA-ADP · exploit
- https://github.com/wazuh/wazuh/releases/tag/v4.14.9[email protected]
- https://github.com/wazuh/wazuh/security/advisories/GHSA-3gq8-gg8f-5h8h[email protected]
- https://www.vulncheck.com/advisories/wazuh-agent-1.0.0-before-4.14.9-stack-buffer-overflow-via-read-snortfull[email protected]
- https://github.com/wazuh/wazuh/security/advisories/GHSA-3gq8-gg8f-5h8hGitHub Security Advisories · advisory
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