How severe is CVE-2025-59938?

CVE-2025-59938 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2025-59938 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-59938?

CVE-2025-59938 affects Wazuh. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-59938?

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

Does CVE-2025-59938 have an EU (EUVD) identifier?

Yes. CVE-2025-59938 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-31396.

When was CVE-2025-59938 published?

CVE-2025-59938 was published on 2025-09-27 and last updated on 2026-06-17.

CVE-2025-59938

CVE-2025-59938 is a medium-severity vulnerability in Wazuh with a CVSS 3.x base score of 6.5. 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-122.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 0% (26th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-31396
Weakness: CWE-122
Affected product: Wazuh
Published: 2025-09-27
Last modified: 2026-06-17

Description

Wazuh is a free and open source platform used for threat prevention, detection, and response. In versions starting from 3.8.0 to before 4.11.0, wazuh-analysisd is vulnerable to a heap buffer overflow when parsing XML elements from Windows EventChannel messages. This issue has been patched in version 4.11.0.

Frequently asked questions

What is CVE-2025-59938?: Wazuh is a free and open source platform used for threat prevention, detection, and response. In versions starting from 3.8.0 to before 4.11.0, wazuh-analysisd is vulnerable to a heap buffer overflow when parsing XML elements from Windows EventChannel messages. This issue has been patched in version 4.11.0.
How severe is CVE-2025-59938?: CVE-2025-59938 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2025-59938 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-59938?: CVE-2025-59938 affects Wazuh. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-59938?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-59938 have an EU (EUVD) identifier?: Yes. CVE-2025-59938 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-31396.
When was CVE-2025-59938 published?: CVE-2025-59938 was published on 2025-09-27 and last updated on 2026-06-17.

References

https://github.com/wazuh/wazuh/security/advisories/GHSA-vw3r-mjg3-9hh2

Affected products (1)

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

More vulnerabilities in Wazuh

CVE-2025-24016 — Critical (CVSS 9.9): Wazuh is a free and open source platform used for threat prevention, detection, and response. Starting in version 4.4.0…
CVE-2024-32038 — Critical (CVSS 9.8): Wazuh is a free and open source platform used for threat prevention, detection, and response. There is a buffer…
CVE-2021-44079 — Critical (CVSS 9.8): In the wazuh-slack active response script in Wazuh 4.2.x before 4.2.5, untrusted user agents are passed to a curl…
CVE-2026-25770 — Critical (CVSS 9.1): Wazuh is a free and open source platform used for threat prevention, detection, and response. Starting in version 3.9.0…
CVE-2026-25769 — Critical (CVSS 9.1): Wazuh is a free and open source platform used for threat prevention, detection, and response. Versions 4.0.0 through…
CVE-2026-30893 — Critical (CVSS 9.0): Wazuh is a free and open source platform used for threat prevention, detection, and response. From version 4.4.0 to…

All CVEs affecting Wazuh →

Other CWE-122 (Heap-based Buffer Overflow) vulnerabilities

CVE-2026-46752 — Critical (CVSS 10.0): Redis Lua HEAP overflow in cjson library vulnerability in Apache Kvrocks. This issue affects Apache Kvrocks: from…
CVE-2026-24822 — Critical (CVSS 10.0): Out-of-bounds Write, Heap-based Buffer Overflow vulnerability in ttttupup wxhelper (src modules). This vulnerability is…
CVE-2025-23123 — Critical (CVSS 10.0): A malicious actor with access to the management network could execute a remote code execution (RCE) by exploiting a…
CVE-2022-34819 — Critical (CVSS 10.0): A vulnerability has been identified in SIMATIC CP 1242-7 V2 (All versions < V3.3.46), SIMATIC CP 1243-1 (All versions <…
CVE-2026-44050 — Critical (CVSS 9.9): A heap-based buffer overflow in the CNID daemon comm_rcv() function in Netatalk 2.0.0 through 4.4.2 allows a remote…
CVE-2026-49841 — Critical (CVSS 9.8): FreeSWITCH is a Software Defined Telecom Stack enabling the digital transformation from proprietary telecom switches to…

Browse all CWE-122 (Heap-based Buffer Overflow) vulnerabilities →