Vulnerability Description
Wazuh is a free and open source platform used for threat prevention, detection, and response. From 4.5.0 until 4.14.6 and 5.0.0-beta2, compare_wazuh_versions() in src/shared/version_op.c copies the attacker-controlled enrollment V: field into a 10-byte stack buffer with strncpy() but does not explicitly terminate the buffer. The function is reachable before authentication through wazuh-authd on TCP port 1515 when anonymous TLS enrollment is enabled. A version string of at least nine non-null bytes can cause strchr() and strtok() to read beyond ver2 and can make strtok() write a null byte into adjacent stack memory, allowing a remote denial of service. This issue is fixed in versions 4.14.6 and 5.0.0-beta2.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Wazuh | Wazuh | >= 4.5.0, < 4.14.6 |
Related Weaknesses (CWE)
References
- https://github.com/wazuh/wazuh/commit/b6aac379982d6144b8da38450cbea6c8dc15be44Patch
- https://github.com/wazuh/wazuh/pull/36059Issue TrackingPatch
- https://github.com/wazuh/wazuh/releases/tag/v4.14.6PatchRelease Notes
- https://github.com/wazuh/wazuh/releases/tag/v5.0.0-beta2PatchRelease Notes
- https://github.com/wazuh/wazuh/security/advisories/GHSA-4fvp-jfc3-qr6rExploitVendor Advisory
FAQ
What is CVE-2026-45798?
CVE-2026-45798 is a vulnerability with a CVSS score of 7.5 (HIGH). Wazuh is a free and open source platform used for threat prevention, detection, and response. From 4.5.0 until 4.14.6 and 5.0.0-beta2, compare_wazuh_versions() in src/shared/version_op.c copies the at...
How severe is CVE-2026-45798?
CVE-2026-45798 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-45798?
Check the references section above for vendor advisories and patch information. Affected products include: Wazuh Wazuh.