CVE-2026-4731

Application hang via wrapped QuickTime atom size

Published Mar 24, 2026 · Updated Mar 24, 2026

Integer overflow in the parse_qt function in ART before 1.25.12 allows local users to hang the application with a crafted QuickTime file. The parser adds an untrusted 32-bit atom size to the current file offset without rejecting wraparound, so processing can cycle indefinitely. Exploitation requires the application to process attacker-supplied input, and the documented consequence is an application hang.

CVSS severityUnavailable
Unscored
EPSS probability0.13%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Integer overflow in the parse_qt function in ART before 1.25.12 allows local users to hang the application with a crafted QuickTime file. The parser adds an untrusted 32-bit atom size to the current file offset without rejecting wraparound, so processing can cycle indefinitely. Exploitation requires the application to process attacker-supplied input, and the documented consequence is an application hang.

The record

CVE
CVE-2026-4731
Published
Mar 24, 2026
Updated
Mar 24, 2026
Vendor
artraweditor
Product
ART
Classifications
CWE-190, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 24, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 24, 2026Record 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 <1.25.12

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

artraweditor · ARTversion=0 <1.25.12

Published CVSS scores

8.5Government Technology Agency of Singapore Cyber Security GroupCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-190Integer Overflow or Wraparound
T1204.002Malicious 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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