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Vulnerabilities

Vulnerability · CVE-2025-58447

rAthena is an open-source cross-platform massively multiplayer online role playing game (MMORPG) server.

Published Sep 9, 2025 · catalog updated Oct 19, 2026 · rAthena

Last checked Oct 26, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2025-58447. EPSS is 0.88%. Act only if a listed version of rAthena is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
Critical9.8
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.88%
Remediation
Version ranges on file
Affected products
cpe rathena/rathena · vendor rAthena rathena < 2f5248b

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 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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe rathena/rathenaversion unspecified
  • vendor rAthena rathena < 2f5248b< 2f5248b

How to fix CVE-2025-58447

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-58447. EPSS is 0.88%. Act only if a listed version of rAthena is installed.

Which versions are affected?

Compare what you have installed with rAthena rathena < 2f5248b < 2f5248b. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-122: Heap-based Buffer Overflow; CWE-787: Out-of-bounds Write. EPSS 0.88%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Sep 9, 2025 · NIST NVD

    Detected

    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 with an oversized token length. This leads to immediate denial of service (crash) and it is possible to achieve remote code execution

  2. Oct 19, 2026 · NIST NVD

    Updated

    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 with an oversized token length. This leads to immediate denial of service (crash) and it is possible to achieve remote code execution

Sources

  • CVE.orgVulnerability recordCVE-2025-58447

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-58447

    30-day exploitation probability 0.88%

    first.org
  • EUVDVulnerability recordEUVD-2025-34018

    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 with an overs

    euvd.enisa.europa.eu
  • NIST NVDVulnerability recordCVE-2025-58447

    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

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 26, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSOct 23, 2026
  • EUVDOct 22, 2026
  • CVE.orgOct 21, 2026
  • NIST NVDOct 19, 2026