What’s Vulnerable › Vulnerabilities

CVE-2023-7340: Wazuh authd service (os_auth) Heap-based Buffer Overflow

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-03-27 · updated 2026-10-28
• Weakness: CWE-125

Description

Wazuh authd contains a heap-buffer overflow vulnerability that allows attackers to cause memory corruption and malformed heap data by sending specially crafted input. Attackers can exploit this vulnerability to trigger a denial of service condition, resulting in low availability impact to the authentication daemon.

Affected products

• wazuh: through 3.5.0; 4.3.10 (and their updates)

References

• https://github.com/wazuh/wazuh/security/advisories/GHSA-grjq-p5fg-m24r
• https://www.vulncheck.com/advisories/heap-buffer-overflow-in-wazuh-authd

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