CVE-2026-44251CWE-122CWE-191

Wazuh : size_t underflow in msgs.c ReadSecMSG causes wazuh-remoted DoS and potential heap overflow via crafted agent message

Medium · published July 17, 2026

CVSS v3.1
6.5
EPSS
0%
Percentile
37.6
In the wild
Unconfirmed
What it is

Wazuh is a free and open source platform used for threat prevention, detection, and response. In versions 3.0.0 and above, prior to 4.14.5, a size_t integer underflow in os_crypto/shared/msgs.c:389 allows any enrolled Wazuh agent to crash the wazuh-remoted process on the manager, immediately disconnecting all agents from the manager. A second code path reached by the same underflow may allow heap memory corruption. This issue has been fixed in version 4.14.5.

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00444 · 37.6th percentile
Weaknesses
CWE-122 · Heap-based Buffer Overflow; CWE-191 · Integer Underflow (Wrap or Wraparound)
Published
2026-07-17T00:01Z
EPSS history
Timeline
  • 17 JUL 00:01Z
    Wazuh : size_t underflow in msgs.c ReadSecMSG causes wazuh-remoted DoS and potential heap overflow via crafted agent message
    cvelistv5