CVE-2025-40604: email security — Fix

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.

Is your site exposed to CVE-2025-40604?

Run a free security scan — no signup, results in seconds.

CVSS v3.1 Score

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness Type (CWE)

CWE-494 CWE-494

Affected Products

Vendor	Product	Versions
sonicwall	email_security_appliance_5000_firmware	< 10.0.33.8195
sonicwall	email_security_appliance_5000	All
sonicwall	email_security_appliance_5050_firmware	< 10.0.33.8195
sonicwall	email_security_appliance_5050	All
sonicwall	email_security_appliance_7000_firmware	< 10.0.33.8195
sonicwall	email_security_appliance_7000	All
sonicwall	email_security_appliance_7050_firmware	< 10.0.33.8195
sonicwall	email_security_appliance_7050	All
sonicwall	email_security_appliance_9000_firmware	< 10.0.33.8195
sonicwall	email_security_appliance_9000	All

References

Advisories & Patches

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

Frequently Asked Questions

What is CVE-2025-40604? +

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. It has a CVSS v3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2025-40604? +

CVE-2025-40604 has a CVSS v3.1 score of 9.8 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately.

What products are affected by CVE-2025-40604? +

CVE-2025-40604 affects products from sonicwall, specifically: email_security_appliance_5000, email_security_appliance_5000_firmware, email_security_appliance_5050, email_security_appliance_5050_firmware, email_security_appliance_7000, email_security_appliance_7000_firmware, email_security_appliance_7050, email_security_appliance_7050_firmware, email_security_appliance_9000, email_security_appliance_9000_firmware. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-40604? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

Related Vulnerabilities

CVE-2026-42249

Ollama for Windows contains a Remote Code Execution vulnerability in its update mechanism due to improper handling of attacker‑controlled HTTP …

CVE-2026-9037

A firmware update mechanism in the affected charging controller fails to validate the authenticity of firmware packages delivered through the …

CVE-2026-45058

electerm is an open-sourced terminal/ssh/sftp/telnet/serialport/RDP/VNC/Spice/ftp client. In 3.8.8 and earlier, there is persistent local-pty code execution via imported bookmarks or …

CVE-2026-50562

FastGPT is a knowledge-based AI application platform. At commit 22ebfacbb43311e9b73294040ae0eb87390c6bba and earlier, artifacts built from untrusted pull request code in …

CVE-2026-42248

Ollama for Windows does not perform integrity or authenticity verification of downloaded update executables. Unlike other platforms, the Windows implementation …

CVE-2025-52937

Vulnerability in PointCloudLibrary PCL (surface/src/3rdparty/opennurbs modules). This vulnerability is associated with program files crc32.C. This vulnerability is only relevant if …

CVE-2025-40604