# CVE-2024-8811: WinZip Mark-of-the-Web Bypass Vulnerability

> Attackers can bypass Mark-of-the-Web protections in WinZip to execute arbitrary code by tricking users into opening malicious archives.

- **Severity:** High 7.8 (`CVSS:3.0/AV:L/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:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 22 Nov 2024
- **Updated:** 2 Dec 2024
- **Also known as:** GHSA-fv86-4v9q-h758

## What is CVE-2024-8811?

CVE-2024-8811 is a high-severity vulnerability in WinZip, published on 22 Nov 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

WinZip Mark-of-the-Web Bypass Vulnerability. This vulnerability allows remote attackers to bypass the Mark-of-the-Web protection mechanism on affected installations of WinZip. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.

The specific flaw exists within the handling of archive files. When opening an archive that bears the Mark-of-the-Web, WinZip removes the Mark-of-the-Web from the archive file. Following extraction, the extracted files also lack the Mark-of-the-Web. An attacker can leverage this vulnerability to execute arbitrary code in the context of the current user. Was ZDI-CAN-23983.

Weakness: CWE-670 (Always-Incorrect Control Flow Implementation), CWE-693 (Protection Mechanism Failure)

## Which versions are affected by CVE-2024-8811?

It affects 1 product.


Products: Winzip Winzip.

## How do I fix CVE-2024-8811?

No fix has been published for CVE-2024-8811 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-8811 being exploited?

There is no known exploitation of CVE-2024-8811 in the wild and no public exploit code.

## Other vulnerabilities in WinZip

- [CVE-2006-6884](https://insights.sbomify.com/CVE-2006-6884/): Memory corruption in n/a (critical 9.3)
- [CVE-2025-1240](https://insights.sbomify.com/CVE-2025-1240/): WinZip 7Z File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability (high 7.8)
- [CVE-2008-3442](https://insights.sbomify.com/CVE-2008-3442/): Code injection in n/a (high 7.5)
- [CVE-2007-0264](https://insights.sbomify.com/CVE-2007-0264/): Memory corruption in n/a (medium 6.6)
- [CVE-2003-1376](https://insights.sbomify.com/CVE-2003-1376/): Weak cryptography in n/a (medium 4.6)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-8811 and fix it if it is affected.

What it is: CVE-2024-8811 is a high-severity vulnerability in WinZip, published on 22 Nov 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: There is no known exploitation of CVE-2024-8811 in the wild and no public exploit code.

Affected product: WinZip. 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-2024-8811/ (Markdown: https://insights.sbomify.com/CVE-2024-8811/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-8811
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-8811
- OSV: https://osv.dev/vulnerability/CVE-2024-8811

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-8811/
Summaries are generated and may contain mistakes; the official description above is the record.