# CVE-2019-25677: WinRAR 5.61 Denial of Service via Malformed Language File

> Local attackers can crash WinRAR by placing a malformed language file in the installation directory, causing an access violation when testing archives.

- **Severity:** Medium 6.9 (`CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 5 Apr 2026
- **Updated:** 15 Jul 2026
- **Also known as:** GHSA-wqh9-pjhr-mh8q

## What is CVE-2019-25677?

CVE-2019-25677 is a medium-severity denial of service vulnerability in Win-Rar WinRAR, published on 5 Apr 2026. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

WinRAR 5.61 contains a denial of service vulnerability that allows local attackers to crash the application by placing a malformed winrar.lng language file in the installation directory. Attackers can trigger the crash by opening an archive and pressing the test button, causing an access violation at memory address 004F1DB8 when the application attempts to read invalid data.

Weakness: CWE-379 (Creation of Temporary File in Directory with Insecure Permissions)

## Which versions are affected by CVE-2019-25677?

It affects 1 product.


Products: Rarlab Winrar.

## How do I fix CVE-2019-25677?

No fix has been published for CVE-2019-25677 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-25677 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2019-25677 exists.

## Other vulnerabilities in Win-Rar WinRAR

- [CVE-2025-6218](https://insights.sbomify.com/CVE-2025-6218/): RARLAB WinRAR Path Traversal (high 7.8, exploited in the wild)
- [CVE-2023-38831](https://insights.sbomify.com/CVE-2023-38831/): RARLAB WinRAR Code Execution (high 7.8, exploited in the wild)
- [CVE-2018-20250](https://insights.sbomify.com/CVE-2018-20250/): WinRAR Absolute Path Traversal (high 7.8, exploited in the wild)
- [CVE-2008-7144](https://insights.sbomify.com/CVE-2008-7144/): Memory corruption in n/a (critical 10.0)
- [CVE-2004-1254](https://insights.sbomify.com/CVE-2004-1254/): Integer overflow in n/a (critical 10.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-25677 and fix it if it is affected.

What it is: CVE-2019-25677 is a medium-severity denial of service vulnerability in Win-Rar WinRAR, published on 5 Apr 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2019-25677 exists.

Affected product: Win-Rar WinRAR. 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-2019-25677/ (Markdown: https://insights.sbomify.com/CVE-2019-25677/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-25677
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-25677
- OSV: https://osv.dev/vulnerability/CVE-2019-25677

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-25677/
Summaries are generated and may contain mistakes; the official description above is the record.