CVE-2024-28886

Arbitrary command execution via crafted project file

Published May 28, 2024 · Updated Aug 2, 2024

OS command injection in Ameya/Ayame UTAU before 0.4.19 allows context-dependent attackers to execute commands through a crafted .ust project file. Public advisories identify the crafted .ust file as the trigger but do not disclose the parser field or command-construction operation. Execution requires a user to open the malicious project, after which commands run with that user’s privileges.

CVSS severity5.3
Medium
EPSS probability0.66%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

OS command injection in Ameya/Ayame UTAU before 0.4.19 allows context-dependent attackers to execute commands through a crafted .ust project file. Public advisories identify the crafted .ust file as the trigger but do not disclose the parser field or command-construction operation. Execution requires a user to open the malicious project, after which commands run with that user’s privileges.

The record

CVE
CVE-2024-28886
Published
May 28, 2024
Updated
Aug 2, 2024
Vendor
Ameya/Ayame
Product
UTAU
Classifications
CWE-94, CWE-78, T1203, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 28, 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=0 <0.4.19
  2. Affected versionversion=prior to v0.4.19

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Ameya/Ayame · UTAUversion=0 <0.4.19; version=prior to v0.4.19

Published CVSS scores

8.4CISA-ADPCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
5.3IPACVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1203Exploitation for Client Execution
T1204.002Malicious File

Public exploit references

No public exploit references are available in this record.

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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