Heap-Buffer Overflow Vulnerability in Wazuh Authd
CVE-2023-7340

5.3MEDIUM

Key Information:

Vendor

Wazuh

Status
Wazuh
Vendor
CVE Published:
27 March 2026

What is CVE-2023-7340?

The Wazuh authentication daemon (authd) is susceptible to a heap-buffer overflow vulnerability that could be exploited by an attacker sending specially crafted inputs. This flaw may lead to memory corruption, allowing attackers to manipulate heap data and potentially induce a denial-of-service condition, thereby impacting the availability of the authentication services. Proper measures should be adopted to protect against unauthorized input to mitigate these risks.

Affected Version(s)

Wazuh Linux 3.5.0 <= 4.3.10

References

https://github.com/wazuh/wazuh/security/advisories/GHSA-g...
vendor-advisory
https://www.vulncheck.com/advisories/heap-buffer-overflow...
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Reported by @vikman90; credited to @stasos24.
.