# CVE-2025-63435: Missing authorization in n/a

> Unauthenticated attackers can download official update packages from the Xtool AnyScan Android application server due to missing authentication on the update endpoint.

- **Severity:** Medium 4.3 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 24 Nov 2025
- **Updated:** 24 Nov 2025
- **Also known as:** GHSA-xx5r-8vrj-6x6c

## What is CVE-2025-63435?

CVE-2025-63435 is a medium-severity missing authorization vulnerability in n/a, published on 24 Nov 2025. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Xtooltech Xtool AnyScan Android Application 4.40.40 is Missing Authentication for Critical Function. The server-side endpoint responsible for serving update packages for the application does not require any authentication. This allows an unauthenticated remote attacker to freely download official update packages..

Weakness: CWE-306 (Missing Authentication for Critical Functionality)

## Which versions are affected by CVE-2025-63435?

It affects 1 product.


Products: Xtooltech Xtool Anyscan.

## How do I fix CVE-2025-63435?

No fix has been published for CVE-2025-63435 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-63435 being exploited?

There is no known exploitation of CVE-2025-63435 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2025-63434](https://insights.sbomify.com/CVE-2025-63434/): Code injection in n/a (high 8.8)
- [CVE-2025-63432](https://insights.sbomify.com/CVE-2025-63432/): Security feature bypass in n/a (medium 4.6)
- [CVE-2025-63433](https://insights.sbomify.com/CVE-2025-63433/): Hardcoded credentials in n/a (medium 4.6)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-63435 and fix it if it is affected.

What it is: CVE-2025-63435 is a medium-severity missing authorization vulnerability in n/a, published on 24 Nov 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2025-63435 in the wild and no public exploit code.

Affected product: n/a. 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-2025-63435/ (Markdown: https://insights.sbomify.com/CVE-2025-63435/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-63435
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-63435
- OSV: https://osv.dev/vulnerability/CVE-2025-63435

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-63435/
Summaries are generated and may contain mistakes; the official description above is the record.