CVE-2022-4880

Arbitrary file write via ZIP entry traversal

Published Jan 7, 2023 · Updated Aug 3, 2024

Path traversal in StAkira OpenUtau before 0.0.991 allows attackers to write files outside the voicebank directory via a crafted ZIP archive. VoicebankInstaller.LoadArchive combines each untrusted archive entry key with the extraction base path and writes the entry without first confining the resolved path to that base directory. Exploitation requires a crafted voicebank archive to reach the desktop installer's archive-loading path, and writes are limited to locations permitted by the OpenUtau process.

CVSS severity9.8
Critical
EPSS probability1.06%
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 StAkira OpenUtau before 0.0.991 allows attackers to write files outside the voicebank directory via a crafted ZIP archive. VoicebankInstaller.LoadArchive combines each untrusted archive entry key with the extraction base path and writes the entry without first confining the resolved path to that base directory. Exploitation requires a crafted voicebank archive to reach the desktop installer's archive-loading path, and writes are limited to locations permitted by the OpenUtau process.

The record

CVE
CVE-2022-4880
Published
Jan 7, 2023
Updated
Aug 3, 2024
Vendor
StAkira
Product
OpenUtau
Classifications
CWE-22, T1204.002
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Jan 7, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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?

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  1. Affected versionversion=n/a

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

StAkira · OpenUtauversion=n/a

Published CVSS scores

5.2VulDBAV:A/AC:L/Au:S/C:P/I:P/A:P
5.5VulDBCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/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)
Vectorlocal
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1204.002User Execution: Malicious File

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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