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CVE-2026-44254
5.3 MEDIUM
- CVSS version (CVSS): 3.1
- Attack Vector (AV): Network (N)
- Attack Complexity (AC): High (H)
- Privileges Required (PR): Low (L)
- User Interaction (UI): None (N)
- Scope (S): Unchanged (U)
- Confidentiality (C): None (N)
- Integrity (I): None (N)
- Availability (A): High (H)
- Modified Attack Vector (MAV): Network (N)
- Modified Attack Complexity (MAC): High (H)
- Modified Privileges Required (MPR): Low (L)
- Modified User Interaction (MUI): None (N)
- Modified Confidentiality (MC): None (N)
- Modified Scope (MS): Unchanged (U)
- Modified Integrity (MI): None (N)
- Modified Availability (MA): High (H)
Activity log
- Created & dismissed (no matching packages found) suggestion
Wazuh: Stack Out-of-Bounds Write in remoted Decompression Path
Wazuh is a free and open source platform used for threat prevention, detection, and response. From 1.0.0 until 4.14.6 and 5.0.0-beta2, HandleSecureMessage() in src/remoted/secure.c passes a pointer inside its stack buffer to ReadSecMSG(), and src/os_crypto/shared/msgs.c decompresses up to OS_MAXSTR bytes at that offset. For an encrypted agent message on TCP port 1514 that expands to 65,536 bytes, os_zlib_uncompress() writes a terminating null byte beyond the end of the destination buffer. The resulting stack out-of-bounds write in the root-level remoted daemon can crash message processing and disrupt agent communications. This issue is fixed in versions 4.14.6 and 5.0.0-beta2.
References
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https://github.com/wazuh/wazuh/security/advisories/GHSA-9wm4-fp6c-hqgq x_refsource_CONFIRM
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https://github.com/wazuh/wazuh/pull/35773 x_refsource_MISC
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https://github.com/wazuh/wazuh/releases/tag/v4.14.6 x_refsource_MISC
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https://github.com/wazuh/wazuh/releases/tag/v5.0.0-beta2 x_refsource_MISC
Affected products
wazuh
- ==>= 1.0.0, < 4.14.6
- ==>= 5.0.0-beta1, < 5.0.0-beta2