CVE-2025-58447
Critical
Description
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.
SeverityCritical
CVSS9.8
Exploit probability—
ProductRathena
PublishedSep 9, 2025
First seenSep 9, 2025
Weakness typeCWE-122CWE-122
How to fix
Update
- rathena rathena2025-09-06 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| rathena rathena | v < 2025-09-06 | 2025-09-06 |
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