# CVE-2024-26333: Use after free in n/a

> A use-after-free vulnerability in swftools allows attackers to cause a denial of service via a segmentation violation.

- **Severity:** Medium 5.5 (`CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 5 Mar 2024
- **Updated:** 27 Aug 2024
- **Also known as:** GHSA-6vj5-v9m4-vvmg, UBUNTU-CVE-2024-26333

## What is CVE-2024-26333?

CVE-2024-26333 is a medium-severity use after free vulnerability in Swftools Swftools, published on 5 Mar 2024. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official description

swftools v0.9.2 was discovered to contain a segmentation violation via the function free_lines at swftools/lib/modules/swfshape.c.

Weakness: CWE-416 (Use After Free)

## Which versions are affected by CVE-2024-26333?

It affects 1 product.


Products: Swftools Swftools.

## How do I fix CVE-2024-26333?

No fix has been published for CVE-2024-26333 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-26333 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-26333 exists.

## Other vulnerabilities in Swftools Swftools

- [CVE-2022-40008](https://insights.sbomify.com/CVE-2022-40008/): Memory corruption in n/a (critical 9.8)
- [CVE-2022-40009](https://insights.sbomify.com/CVE-2022-40009/): Use after free in n/a (critical 9.8)
- [CVE-2010-1516](https://insights.sbomify.com/CVE-2010-1516/): Integer overflow in n/a (critical 9.3)
- [CVE-2024-26339](https://insights.sbomify.com/CVE-2024-26339/): Memory corruption in n/a (critical 9.1)
- [CVE-2024-25165](https://insights.sbomify.com/CVE-2024-25165/): Memory corruption in n/a (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-26333 and fix it if it is affected.

What it is: CVE-2024-26333 is a medium-severity use after free vulnerability in Swftools Swftools, published on 5 Mar 2024. It can only be exploited from the same machine or local network, 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-2024-26333 exists.

Affected product: Swftools Swftools. 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-2024-26333/ (Markdown: https://insights.sbomify.com/CVE-2024-26333/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-26333
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-26333
- OSV: https://osv.dev/vulnerability/CVE-2024-26333

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-26333/
Summaries are generated and may contain mistakes; the official description above is the record.