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CVE-2025-58447— rAthena has heap-based buffer overflow in login server

Quick assessment

Affected
rathena rathena
Exploitation
Public or AI PoC available; prioritize validation
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Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

rAthena是rAthena开源的一个跨平台MMORPG服务器。 rAthena 2f5248b之前版本存在安全漏洞，该漏洞源于登录服务器堆缓冲区溢出，可能导致拒绝服务和远程代码执行。

CVSS 9.8 · Critical EPSS 0.88% · P58
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I. Basic Information for CVE-2025-58447

Vulnerability Information
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Vulnerability Title
rAthena has heap-based buffer overflow in login server
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
堆缓冲区溢出
Source: CVE Program / CVE List V5
Vulnerability Title
rAthena 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
rAthena是rAthena开源的一个跨平台MMORPG服务器。 rAthena 2f5248b之前版本存在安全漏洞，该漏洞源于登录服务器堆缓冲区溢出，可能导致拒绝服务和远程代码执行。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

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Affected Products

Vendor Product Affected Versions CPE Subscribe
rathena rathena < 2f5248b -

II. Public POCs for CVE-2025-58447

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Qwen3.6-35B-A3B · 11048 chars
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III. Intelligence Information for CVE-2025-58447

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Same Patch Batch · rathena · 2025-09-09 · 3 CVEs total

CVE-2025-58448 9.1 CRITICAL rAthena has SQL Injection in PartyBooking component via `WorldName` parameter.
CVE-2025-58750 8.2 HIGH rAthena missing bound check in chclif_parse_moveCharSlot

IV. Related Vulnerabilities

Same product: rathena
Same vendor: rathena
Same weakness: CWE-122

V. Comments for CVE-2025-58447

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