How severe is CVE-2023-7340?

CVE-2023-7340 has a CVSS 3.x base score of 3.5, rated low severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2023-7340 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-7340?

CVE-2023-7340 primarily affects Wazuh. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-7340?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2023-7340 have an EU (EUVD) identifier?

Yes. CVE-2023-7340 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-60542.

When was CVE-2023-7340 published?

CVE-2023-7340 was published on 2026-03-27 and last updated on 2026-06-17.

CVE-2023-7340

CVE-2023-7340 is a low-severity vulnerability in Wazuh with a CVSS 3.x base score of 3.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-125.

Key facts

Severity: Low (CVSS 3.x base score 3.5)
CVSS v4: 5.3
EPSS exploit prediction: 0% (23rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2023-60542
Weakness: CWE-125
Affected product: Wazuh
Published: 2026-03-27
Last modified: 2026-06-17

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.

Frequently asked questions

What is 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. Attackers can exploit this vulnerability to trigger a denial of service condition, resulting in low availability impact to the authentication daemon.
How severe is CVE-2023-7340?: CVE-2023-7340 has a CVSS 3.x base score of 3.5, rated low severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2023-7340 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-7340?: CVE-2023-7340 primarily affects Wazuh. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-7340?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2023-7340 have an EU (EUVD) identifier?: Yes. CVE-2023-7340 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-60542.
When was CVE-2023-7340 published?: CVE-2023-7340 was published on 2026-03-27 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:wazuh:wazuh:*:*:*:*:*:*:*:*
cpe:2.3:a:wazuh:wazuh:4.3.10:*:*:*:*:*:*:*

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