Code execution via Reflect.apply allocation overflow
Published Jan 12, 2023 · Updated Mar 5, 2025
Integer overflow in the QML QtScript Reflect API in The Qt Company Qt Framework 6.3.2 allows remote attackers to execute code. Reflect.apply passes an attacker-controlled array-like length to createListFromArrayLike, where signed pointer arithmetic wraps during stack allocation and corrupts memory. Exploitation requires an application to load attacker-controlled QML or JavaScript, such as through a malicious web page, and can crash the process or execute arbitrary code.
Summary
What happened
Integer overflow in the QML QtScript Reflect API in The Qt Company Qt Framework 6.3.2 allows remote attackers to execute code. Reflect.apply passes an attacker-controlled array-like length to createListFromArrayLike, where signed pointer arithmetic wraps during stack allocation and corrupts memory. Exploitation requires an application to load attacker-controlled QML or JavaScript, such as through a malicious web page, and can crash the process or execute arbitrary code.
The record
- CVE
- CVE-2022-40983
- Published
- Jan 12, 2023
- Updated
- Mar 5, 2025
- Vendor
- The Qt Company
- Product
- Qt Framework
- Classifications
- CWE-190, T1203
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jan 12, 2023CVE publishedPublication date reported by the CVE source.
- Mar 5, 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.
- Affected versionversion=6.3.2.
What conditions does exploitation require?
What is affected?
Published CVSS scores
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.
Weakness, pattern, technique
Public exploit references
- Cisco Talos Reflect.apply proof of conceptproof of concept · demonstrated
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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