rAthena is an open-source cross-platform massively multiplayer online role playing game (MMORPG) server. Versions prior to commit 2f5248b have a heap-based buffer overflow in the login server, remote attacker to overwrite adjacent session fields by sending a crafted `CA_SSO_LOGIN_REQ` with an oversized token length. This leads to immediate denial of service (crash) and it is possible to achieve remote code execution via heap corruption. Commit 2f5248b fixes the issue.
Fix
Patch, vendor advisory and mitigation references on NVD 2
- https://github.com/rathena/rathena/commit/2f5248b9cd9a8c6b42422ddecfc4cc2cd0e69e4b Patch
- https://github.com/rathena/rathena/security/advisories/GHSA-4p33-6xqr-cm6x Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 9.8 · rathenaNVD modified 2026-10-19 17:10
Affected (CPE criteria) 1
cpe:2.3:a:rathena:rathena:*:*:*:*:*:*:*:*