CVE-2025-40600

CRITICAL EXPLOITED

SonicOS 7.1.1-7040 to <7.3.0-7012 - Unauthenticated Denial of Service via Format String

Title source: llm

Exploitation Summary

CVE-2025-40600 has been observed exploited in the wild (reported by VulnCheck KEV).

Description

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

References (1)

Core 1

Core References

Vendor Advisory vendor-advisory

https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2025-0013

Scores

CVSS v3 9.8

EPSS 0.0084

EPSS Percentile 53.0%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable yes

Technical Impact total

Details

VulnCheck KEV 2026-05-10

CWE

CWE-134

Status published

Products (1)

sonicwall/sonicos 7.1.1-7040 - 7.3.0-7012

Published Jul 29, 2025

Tracked Since Feb 18, 2026