Vulnerability · CVE-2023-7340
Wazuh authd contains a heap-buffer overflow vulnerability that allows attackers to cause memory corruption and malformed heap data by sending specially crafted input.
Published Mar 27, 2026 · catalog updated Jun 17, 2026 · Wazuh authd contains a
Check if you run it
No confirmed exploitation is on record for CVE-2023-7340. EPSS is 0.32%. Act only if a listed version of Wazuh authd contains a is installed.
Gaps on this record
- The stored product name is a package slug. The name on this page is taken from the title (Wazuh authd contains a).
- No vendor fix or required action is stored. Compare the linked advisory before you change production.
- Severity
- Medium5.3
- Known exploitation
- Not in CISA/VulnCheck KEV
- EPSS
- 0.32%
- Remediation
- Advisory link
- Affected products
- cpe wazuh/wazuh
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.
Are you affected?
Enter the version you run. The result uses only the ranges stored on this record.
The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.
- cpe wazuh/wazuh4.3.10
How to fix CVE-2023-7340
Recommended remediation
A patch or advisory reference is linked. Open the original publisher for availability by product version.
Official advisories
What to do
Three questions, each answered from this record only. Confirm the vendor advisory before you patch.
Should you patch?
No confirmed exploitation is on record for CVE-2023-7340. EPSS is 0.32%. Act only if a listed version of Wazuh authd contains a is installed.
Which versions are affected?
Compare what you have installed with 4.3.10. Compare the installed version with the linked vendor advisory before you change production.
What should an analyst verify?
CWE-125: Out-of-bounds Read. EPSS 0.32%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.
Code
The project this record applies to. Exploit listings stay in References.
No public source repository is identified for this product.
Timeline
Detection, updates, and resolution for this record.
Mar 27, 2026 · NIST NVD
Detected
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.
Jun 17, 2026 · NIST NVD
Updated
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.
Sources
- CVE.orgVulnerability recordCVE-2023-7340
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2023-7340
30-day exploitation probability 0.3%
first.org - NIST NVDVulnerability recordCVE-2023-7340
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
nvd.nist.gov
References
Freshness
Last verified in this catalog Oct 16, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.