CVE-2025-58750: rAthena missing bound check in chclif_parse_moveCharSlot

Severity: critical (CVSS 9.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-09-09 · updated 2026-10-19
Weakness: CWE-119

Description

rAthena is an open-source cross-platform massively multiplayer online role playing game (MMORPG) server. Versions prior to commit 0cc348b are missing a bound check in `chclif_parse_moveCharSlot` that can result in reading and writing out of bounds using input from the user. The problem has been fixed in commit 0cc348b.

Affected products

rathena: before 2025-09-06 — fixed in 2025-09-06

How to fix

Upgrade to a fixed version: rathena 2025-09-06. Check the vendor advisory for mitigations.

References

https://github.com/rathena/rathena/commit/0cc348b186bbcc3c604c17c39589a319f27d469b
https://github.com/rathena/rathena/security/advisories/GHSA-pjh7-jgr8-4ff6

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