# CVE-2025-62000: BullWall Ransomware Containment incomplete file inspection

> An authenticated attacker can bypass a specific ransomware detection method by preserving file headers, though other integrity checks may still detect the encryption.

- **Severity:** Medium 6.9 (`CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 18 Dec 2025
- **Updated:** 15 Jan 2026
- **Also known as:** GHSA-cv2v-p23m-2q4h

## What is CVE-2025-62000?

CVE-2025-62000 is a medium-severity vulnerability in BullWall Ransomware Containment, published on 18 Dec 2025. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

BullWall Ransomware Containment may not always detect an encrypted file. This issue affects a specific file inspection method that evaluates file content based on header bytes. An authenticated attacker could encrypt files, preserving the first four bytes and preventing this particular method from triggering. The affected product implements additional integrity-based detection mechanisms capable of identifying file corruption or encryption for some common file extensions independent of header bytes. As a result, this vulnerability does not represent a complete bypass of ransomware detection, but a limitation of one detection method when evaluated independently. Versions 4.6.0.0, 4.6.0.6, 4.6.0.7, and 4.6.1.4 are affected. Other versions may also be affected. BullWall plans to improve detection method documentation.

Weakness: CWE-1023 (Incomplete Comparison with Missing Factors)

## Which versions are affected by CVE-2025-62000?

It affects 1 product.


Products: Bullwall Ransomware Containment.

## How do I fix CVE-2025-62000?

No fix has been published for CVE-2025-62000 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-62000 being exploited?

There is no known exploitation of CVE-2025-62000 in the wild and no public exploit code.

## Other vulnerabilities in BullWall Ransomware Containment

- [CVE-2025-62001](https://insights.sbomify.com/CVE-2025-62001/): BullWall Ransomware Containment hard-coded folder exclusions (high 8.7)
- [CVE-2025-62002](https://insights.sbomify.com/CVE-2025-62002/): BullWall Ransomware Containment file count detection bypass (medium 5.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-62000 and fix it if it is affected.

What it is: CVE-2025-62000 is a medium-severity vulnerability in BullWall Ransomware Containment, published on 18 Dec 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2025-62000 in the wild and no public exploit code.

Affected product: BullWall Ransomware Containment. 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-2025-62000/ (Markdown: https://insights.sbomify.com/CVE-2025-62000/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-62000
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-62000
- OSV: https://osv.dev/vulnerability/CVE-2025-62000

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-62000/
Summaries are generated and may contain mistakes; the official description above is the record.