CVE-2025-58447

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.8 under NVD CVSS v3. EPSS exploit probability: 0.8%, top 47% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
Trending — 3 sources updated this week
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 9.8Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
59(Track)
EG Risk 59/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity98% × 45%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
53.4%
KEV
Not listed

Published

September 9, 2025

Last Modified

September 17, 2025

Advisory Details (2)

Auto-updated Jun 13, 2026
Patch available. Sources: github_commit, github.
github Patch Available

Heap-based buffer overflow in login server · Advisory · rathena/rathena · GitHub

https://github.com/rathena/rathena/security/advisories/GHSA-4p33-6xqr-cm6x
github_commit

commit 2f5248b9cd9a (rathena/rathena)

Fix landed in rathena/rathena commit 2f5248b9cd9a — awaiting tagged release

https://github.com/rathena/rathena/commit/2f5248b9cd9a8c6b42422ddecfc4cc2cd0e69e4b

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 12× in last 7d / 44× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-24 14:17 UTCEPSS rescore
  2. 2026-07-23 20:41 UTCOSV refresh
  3. 2026-07-23 14:18 UTCEPSS rescore
  4. 2026-07-23 02:59 UTCEG score recompute
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  1. 2026-07-07 13:45 UTCEPSS rescore
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  4. 2026-07-06 15:11 UTCOSV refresh
  5. 2026-07-06 02:23 UTCEPSS rescore
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  30. 2026-06-18 17:52 UTCEPSS rescore
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  32. 2026-06-18 03:13 UTCOSV refresh
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  66. 2026-05-29 23:04 UTCEG score recompute
  67. 2026-05-29 13:44 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2025-58447?
CVE-2025-58447 is a critical vulnerability published on September 9, 2025. 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 CASSOLOGIN_REQ with an oversized…
When was CVE-2025-58447 disclosed?
CVE-2025-58447 was first published in the National Vulnerability Database on September 9, 2025, with the most recent update on September 17, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-58447 actively exploited?
CVE-2025-58447 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 53.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2025-58447?
CVE-2025-58447 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2025-58447?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-58447, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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