# CVE-2022-40983: Integer overflow in Qt

> An integer overflow in Qt's QML QtScript Reflect API allows arbitrary code execution when a user visits a malicious web page.

- **Severity:** High 8.8 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** Yes
- **Published:** 12 Jan 2023
- **Updated:** 5 Mar 2025
- **Also known as:** DEBIAN-CVE-2022-40983, GHSA-32ph-rfjm-xcxh

## What is CVE-2022-40983?

CVE-2022-40983 is a high-severity vulnerability in Qt Qt, published on 12 Jan 2023. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

An integer overflow vulnerability exists in the QML QtScript Reflect API of Qt Project Qt 6.3.2. A specially-crafted javascript code can trigger an integer overflow during memory allocation, which can lead to arbitrary code execution. Target application would need to access a malicious web page to trigger this vulnerability.

Weakness: CWE-190 (Integer Overflow or Wraparound)

## Which versions are affected by CVE-2022-40983?

It affects 1 product.


Products: Qt Qt.

## How do I fix CVE-2022-40983?

Upgrade to a fixed version.

## Is CVE-2022-40983 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-40983 exists.

## Other vulnerabilities in Qt Qt

- [CVE-2020-12267](https://insights.sbomify.com/CVE-2020-12267/): Use after free in n/a (critical 9.8)
- [CVE-2017-10904](https://insights.sbomify.com/CVE-2017-10904/): Command injection in Qt for Android (critical 9.8)
- [CVE-2011-3194](https://insights.sbomify.com/CVE-2011-3194/): Memory corruption in n/a (critical 9.3)
- [CVE-2022-43591](https://insights.sbomify.com/CVE-2022-43591/): Memory corruption in Qt (high 8.8)
- [CVE-2024-39936](https://insights.sbomify.com/CVE-2024-39936/): Race condition in n/a (high 8.6)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-40983 and fix it if it is affected.

What it is: CVE-2022-40983 is a high-severity vulnerability in Qt Qt, published on 12 Jan 2023. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-40983 exists.

Affected product: Qt Qt. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2022-40983/ (Markdown: https://insights.sbomify.com/CVE-2022-40983/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-40983
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-40983
- OSV: https://osv.dev/vulnerability/CVE-2022-40983

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From sbomify Insights: https://insights.sbomify.com/CVE-2022-40983/
Summaries are generated and may contain mistakes; the official description above is the record.