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.

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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.

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