CVE-2026-24793
Published: 27 January 2026
Summary
CVE-2026-24793 is a critical-severity Classic Buffer Overflow (CWE-120) vulnerability in Azerothcore Azerothcore. Its CVSS base score is 9.8 (Critical).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 18.5th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-16 (Memory Protection).
Threat & Defense at a Glance
Threat & Defense Details
Mitigating Controls (NIST 800-53 r5)AI
Directly requires timely remediation of known software flaws like this buffer overflow in zlib's inflate.c by applying the available patch.
Implements memory protection mechanisms such as stack canaries and DEP to prevent exploitation of buffer overflows leading to out-of-bounds writes.
Mandates validation of input sizes prior to buffer copies, directly countering the unchecked input size flaw in zlib decompression.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Remote unauthenticated buffer overflow (CWE-120/787) in public-facing AzerothCore server component directly enables initial access via exploitation of a network service for RCE/system compromise.
NVD Description
Out-of-bounds Write, Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in azerothcore azerothcore-wotlk (deps/zlib modules). This vulnerability is associated with program files inflate.C. This issue affects azerothcore-wotlk: through v4.0.0.
Deeper analysisAI
CVE-2026-24793 is an Out-of-bounds Write vulnerability, classified as a classic buffer overflow due to buffer copy without checking the size of input, affecting the azerothcore-wotlk project. The issue resides in the deps/zlib modules, specifically associated with the inflate.c program file. It impacts azerothcore-wotlk versions through v4.0.0 and is linked to CWE-120 and CWE-787.
With a CVSS v3.1 base score of 9.8 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H), the vulnerability enables exploitation by unauthenticated attackers over the network with low complexity and no user interaction required. Successful exploitation can result in high impacts to confidentiality, integrity, and availability, potentially allowing remote code execution or system compromise on affected instances.
Mitigation is addressed in a patch provided via the GitHub pull request at https://github.com/azerothcore/azerothcore-wotlk/pull/21599, which security practitioners should review and apply to vulnerable deployments.
Details
- CWE(s)