CVE-2024-32258Public exploitNetwork attack vector

Arbitrary file overwrite via crafted ROM filename

Published Apr 23, 2024 · Updated Aug 2, 2024

Path traversal in the FCEUX 2.7.0 NetPlay server allows remote attackers to overwrite arbitrary server files through a crafted ROM request. NetPlayServer::processClientRomLoadRequests appends the client-supplied ROM filename directly to the temporary-directory path and writes the supplied ROM data there without reducing the name to its basename. The ROM-load request bypasses the server password setting, so an unauthenticated network client can replace any file writable by the FCEUX process; handling the request requires server-side user interaction.

CVSS severity8.8
High
EPSS probability1.87%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in the FCEUX 2.7.0 NetPlay server allows remote attackers to overwrite arbitrary server files through a crafted ROM request. NetPlayServer::processClientRomLoadRequests appends the client-supplied ROM filename directly to the temporary-directory path and writes the supplied ROM data there without reducing the name to its basename. The ROM-load request bypasses the server password setting, so an unauthenticated network client can replace any file writable by the FCEUX process; handling the request requires server-side user interaction.

The record

CVE
CVE-2024-32258
Published
Apr 23, 2024
Updated
Aug 2, 2024
Vendor
TAS Emulators
Product
FCEUX
Classifications
CWE-22, T1565.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 23, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record 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=2.7.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

TAS Emulators · FCEUXversion=2.7.0

Published CVSS scores

8.8UbuntuCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
8.8CISA ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A: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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1565.001Stored Data Manipulation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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