CVE-2025-40600

Name: CVE-2025-40600
Creator: NVD / NIST
Published: 2025-07-29T22:15:24.927+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 0.84%

Last modified Jun 17, 2026

CVE-2025-40600 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. Use of Externally-Controlled Format String vulnerability in the SonicOS SSL VPN interface allows a remote unauthenticated attacker to cause service disruption.. EPSS estimates a 0.84% chance of exploitation in the next 30 days.

Description

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

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

0.84%

53.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-134

Affected Software

Vendor	Product	Versions
Sonicwall	Sonicos	>= 7.1.1-7040, < 7.3.0-7012

References

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

Timeline

Published: Jul 29, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-40600?

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

How severe is CVE-2025-40600?

CVE-2025-40600 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 0.84% probability of exploitation in the next 30 days.

How do I fix CVE-2025-40600?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-40600?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST