SonicOS SSL VPN Format String Causing DoS
CVE-2025-40600 Published on July 29, 2025

Use of Externally-Controlled Format String vulnerability in the SonicOS SSL VPN interface allows a remote unauthenticated attacker to cause service disruption.

Vendor Advisory NVD

Vulnerability Analysis

CVE-2025-40600 is exploitable with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to be critical as this vulnerability has a high impact to the confidentiality, integrity and availability of this component.

Attack Vector:
NETWORK
Attack Complexity:
LOW
Privileges Required:
NONE
User Interaction:
NONE
Scope:
UNCHANGED
Confidentiality Impact:
HIGH
Integrity Impact:
HIGH
Availability Impact:
HIGH

Weakness Type

Use of Externally-Controlled Format String

The software uses a function that accepts a format string as an argument, but the format string originates from an external source.


Products Associated with CVE-2025-40600

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SonicWall Sonicos
 

Affected Versions

SonicWall SonicOS Version 7.2.0-7015 and older versions is affected by CVE-2025-40600

Exploit Probability

EPSS
0.09%
Percentile
25.74%

EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.