CVE-2025-49589

Code execution via unchecked snprintf return length

Published Jun 12, 2025 · Updated Jun 13, 2025

Stack-based buffer overflow in PCSX2 before 2.3.414 allows context-dependent attackers to execute code through a crafted disc image. Kprintf_HLE uses snprintf's would-have-written length to advance within a fixed stack buffer after truncation, allowing subsequent formatting to write beyond its end. Exploitation requires a user to open the image with IOP Console Logging enabled; successful corruption permits code execution in the PCSX2 process.

CVSS severity6.1
Medium
EPSS probability0.30%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack-based buffer overflow in PCSX2 before 2.3.414 allows context-dependent attackers to execute code through a crafted disc image. Kprintf_HLE uses snprintf's would-have-written length to advance within a fixed stack buffer after truncation, allowing subsequent formatting to write beyond its end. Exploitation requires a user to open the image with IOP Console Logging enabled; successful corruption permits code execution in the PCSX2 process.

The record

CVE
CVE-2025-49589
Published
Jun 12, 2025
Updated
Jun 13, 2025
Vendor
PCSX2
Product
PCSX2
Classifications
CWE-121, T1203
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 12, 2025CVE publishedPublication date reported by the CVE source.
  2. Jun 13, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 2.3.414

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

PCSX2 · PCSX2version=< 2.3.414

Published CVSS scores

6.1GitHubCVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:P/VC:N/VI:H/VA:H/SC:H/SI:H/SA:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-121Stack-based Buffer Overflow
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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