# CVE-2025-62002: BullWall Ransomware Containment file count detection bypass

> An authenticated attacker can bypass ransomware detection by encrypting a single large file, evading file-count based triggers.

- **Severity:** Medium 5.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA: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:** 18 Dec 2025
- **Updated:** 15 Jan 2026
- **Also known as:** GHSA-q863-2f3f-cf77

## What is CVE-2025-62002?

CVE-2025-62002 is a medium-severity vulnerability in BullWall Ransomware Containment, published on 18 Dec 2025. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

BullWall Ransomware Containment considers the number of files modified to trigger detection. An authenticated attacker could encrypt a single (possibly large) file without triggering detection if thresholds are configured to require multiple file changes. The number of files to trigger detection can be configured by the user. 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.

Weakness: CWE-358 (Improperly Implemented Security Check for Standard)

## Which versions are affected by CVE-2025-62002?

It affects 1 product.


Products: Bullwall Ransomware Containment.

## How do I fix CVE-2025-62002?

No fix has been published for CVE-2025-62002 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-62002 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-62002 exists.

## 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-2025-62000](https://insights.sbomify.com/CVE-2025-62000/): BullWall Ransomware Containment incomplete file inspection (medium 6.9)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-62002 and fix it if it is affected.

What it is: CVE-2025-62002 is a medium-severity vulnerability in BullWall Ransomware Containment, published on 18 Dec 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-62002 exists.

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-2025-62002/ (Markdown: https://insights.sbomify.com/CVE-2025-62002/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-62002
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-62002
- OSV: https://osv.dev/vulnerability/CVE-2025-62002

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-62002/
Summaries are generated and may contain mistakes; the official description above is the record.