# CVE-2025-40604: Code injection in Email Security

> Attackers with datastore access can modify root filesystem images to gain persistent arbitrary code execution on SonicWall Email Security appliances.

- **Severity:** Medium 6.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 20 Nov 2025
- **Updated:** 26 Feb 2026
- **Also known as:** GHSA-pcxg-qcmm-jh7x

## What is CVE-2025-40604?

CVE-2025-40604 is a medium-severity code injection vulnerability in SonicWall Email Security, published on 20 Nov 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Download of Code Without Integrity Check Vulnerability in the SonicWall Email Security appliance loads root filesystem images without verifying signatures, allowing attackers with VMDK or datastore access to modify system files and gain persistent arbitrary code execution.

Weakness: CWE-494 (Download of Code Without Integrity Check)

## Which versions are affected by CVE-2025-40604?

It affects 5 products.


Products: Sonicwall Email Security Appliance 5000 Firmware, Sonicwall Email Security Appliance 5050 Firmware, Sonicwall Email Security Appliance 7000 Firmware, Sonicwall Email Security Appliance 7050 Firmware, Sonicwall Email Security Appliance 9000 Firmware.

## How do I fix CVE-2025-40604?

No fix has been published for CVE-2025-40604 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-40604 being exploited?

There is no known exploitation of CVE-2025-40604 in the wild and no public exploit code.

## Other vulnerabilities in SonicWall Email Security

- [CVE-2025-40605](https://insights.sbomify.com/CVE-2025-40605/): Path traversal in Email Security (medium 5.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-40604 and fix it if it is affected.

What it is: CVE-2025-40604 is a medium-severity code injection vulnerability in SonicWall Email Security, published on 20 Nov 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2025-40604 in the wild and no public exploit code.

Affected product: SonicWall Email Security. 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-2025-40604/ (Markdown: https://insights.sbomify.com/CVE-2025-40604/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-40604
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-40604
- OSV: https://osv.dev/vulnerability/CVE-2025-40604

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-40604/
Summaries are generated and may contain mistakes; the official description above is the record.