# CVE-2025-0781: Incorrect Authorization in SimGear

> Attackers can bypass Nasal script sandboxing to write arbitrary files, requiring user permissions, affecting FlightGear users.

- **Severity:** High 8.6 (`CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/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:** Yes
- **Published:** 28 Jan 2025
- **Updated:** 12 Feb 2025
- **Also known as:** DEBIAN-CVE-2025-0781, DLA-4034-1, DLA-4035-1, GHSA-555q-7wq3-w6ch, UBUNTU-CVE-2025-0781

## What is CVE-2025-0781?

CVE-2025-0781 is a high-severity missing authorization vulnerability in Debian Debian Linux, published on 28 Jan 2025. 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

An attacker can bypass the sandboxing of Nasal scripts and arbitrarily write to any file path that the user has permission to modify at the operating-system level.

Weakness: CWE-863 (Incorrect Authorization)

## Which versions are affected by CVE-2025-0781?

It affects 2 products.


Products: Debian Debian Linux, Flightgear Simgear.

## How do I fix CVE-2025-0781?

Apply the vendor's patch.

## Is CVE-2025-0781 being exploited?

There is no known exploitation of CVE-2025-0781 in the wild and no public exploit code.

## Other vulnerabilities in Debian Debian Linux

- [CVE-2015-3306](https://insights.sbomify.com/CVE-2015-3306/): ProFTPD Improper Access Control (critical 10.0, exploited in the wild)
- [CVE-2025-49113](https://insights.sbomify.com/CVE-2025-49113/): RoundCube Webmail Deserialization of Untrusted Data (critical 9.9, exploited in the wild)
- [CVE-2026-24061](https://insights.sbomify.com/CVE-2026-24061/): GNU InetUtils Argument Injection (critical 9.8, exploited in the wild)
- [CVE-2025-39682](https://insights.sbomify.com/CVE-2025-39682/): Linux Kernel Improper Check for Unusual or Exceptional Conditions (critical 9.8, exploited in the wild)
- [CVE-2024-9680](https://insights.sbomify.com/CVE-2024-9680/): Mozilla Firefox Use-After-Free (critical 9.8, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-0781 and fix it if it is affected.

What it is: CVE-2025-0781 is a high-severity missing authorization vulnerability in Debian Debian Linux, published on 28 Jan 2025. 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-2025-0781 in the wild and no public exploit code.

Affected product: Debian Debian Linux. 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-2025-0781/ (Markdown: https://insights.sbomify.com/CVE-2025-0781/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-0781
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-0781
- OSV: https://osv.dev/vulnerability/CVE-2025-0781

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-0781/
Summaries are generated and may contain mistakes; the official description above is the record.