CVE-2026-26204

Katalog CVE

CVSS 5.5 · Medium EPSS 0,18%

Kerentanan Buffer Underwrite ('Buffer Underflow') pada wazuh. Skor CVSS 3.1 5.5 (Medium) menurut NVD.

Deskripsi (NVD)

Wazuh is a free and open source platform used for threat prevention, detection, and response. From version 1.0.0 to before version 4.14.4, a heap-based out-of-bounds WRITE occurs in GetAlertData, resulting in writing a NULL byte exactly 1 byte before the start of the buffer allocated by strdup. Due to unsigned integer underflow and pointer arithmetic wrapping, the write lands at offset -1 from the buffer, corrupting heap metadata. A malicious actor can potentially leverage this issue through a compromised agent to cause denial of service or heap corruption by injecting a specially crafted alert into the alerts log file monitored by wazuh-logcollector. This issue has been patched in version 4.14.4.

Rincian

Terbit di NVD

29 April 2026

Terakhir diubah

17 Juni 2026

Status NVD

Analyzed

CVSS 3.1

5.5 (Medium), sumber NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-124: Buffer Underwrite ('Buffer Underflow')
CWE-191: Integer Underflow (Wrap or Wraparound)

EPSS (30 hari)

0,18% peluang dieksploitasi; lebih tinggi dari 6,8% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/wazuh/wazuh/security/advisories/GHSA-j4c7-hwjw-8857 exploit · advisory vendor
• https://github.com/wazuh/wazuh/releases/tag/v4.14.4 release notes