# CVE-2024-11612: 7-Zip CopyCoder Infinite Loop Denial-of-Service Vulnerability

> Remote attackers can cause a denial-of-service condition in 7-Zip by triggering an infinite loop in the CopyCoder stream processing logic.

- **Severity:** Medium 6.5 (`CVSS:3.0/AV:N/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:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** Yes
- **Published:** 22 Nov 2024
- **Updated:** 26 Nov 2024
- **Also known as:** DEBIAN-CVE-2024-11612, GHSA-jrq3-7p6q-9m8h, UBUNTU-CVE-2024-11612

## What is CVE-2024-11612?

CVE-2024-11612 is a medium-severity denial of service vulnerability in 7-Zip, published on 22 Nov 2024. 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

7-Zip CopyCoder Infinite Loop Denial-of-Service Vulnerability. This vulnerability allows remote attackers to create a denial-of-service condition on affected installations of 7-Zip. Interaction with this library is required to exploit this vulnerability but attack vectors may vary depending on the implementation.

The specific flaw exists within the processing of streams. The issue results from a logic error that can lead to an infinite loop. An attacker can leverage this vulnerability to create a denial-of-service condition on the system. Was ZDI-CAN-24307.

Weakness: CWE-835 (Loop with Unreachable Exit Condition)

## Which versions are affected by CVE-2024-11612?

It affects 1 product.


Products: 7-Zip 7-Zip.

## How do I fix CVE-2024-11612?

Upgrade to a fixed version.

## Is CVE-2024-11612 being exploited?

There is no known exploitation of CVE-2024-11612 in the wild and no public exploit code.

## Other vulnerabilities in 7-Zip

- [CVE-2025-0411](https://insights.sbomify.com/CVE-2025-0411/): 7-Zip Mark of the Web Bypass (high 7.0, exploited in the wild)
- [CVE-2008-6536](https://insights.sbomify.com/CVE-2008-6536/): Other in n/a (critical 10.0)
- [CVE-2026-48095](https://insights.sbomify.com/CVE-2026-48095/): GHSL-2026-140_7-Zip: 7-Zip has a heap buffer overflow via NTFS compressed stream buffer under-allocation (high 8.8)
- [CVE-2018-10172](https://insights.sbomify.com/CVE-2018-10172/): Privilege escalation in n/a (high 8.8)
- [CVE-2016-2335](https://insights.sbomify.com/CVE-2016-2335/): Memory corruption in n/a (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-11612 and fix it if it is affected.

What it is: CVE-2024-11612 is a medium-severity denial of service vulnerability in 7-Zip, published on 22 Nov 2024. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2024-11612 in the wild and no public exploit code.

Affected product: 7-Zip. 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-2024-11612/ (Markdown: https://insights.sbomify.com/CVE-2024-11612/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-11612
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-11612
- OSV: https://osv.dev/vulnerability/CVE-2024-11612

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-11612/
Summaries are generated and may contain mistakes; the official description above is the record.