What is CVE-2025-40600?

CVE-2025-40600 is a critical-severity vulnerability in Sonicwall Nsa_2700, classified under Use of Externally-Controlled Format String. CVSS score: 9.8/10. Published 2025-07-29.

How severe is CVE-2025-40600?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Vulnerability in Sonicwall Nsa_2700

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.

EPSS: 0.009 (55.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Sonicwall Nsa_2700
Sonicwall Nsa_3700
Sonicwall Nsa_4700
Sonicwall Nsa_5700
Sonicwall Nsa_6700
Sonicwall Nssp_10700
Sonicwall Nssp_11700
Sonicwall Nssp_13700
Sonicwall Nssp_15700
Sonicwall Nsv270

Weakness classification (CWE)

CWE-134 — Use of Externally-Controlled Format String

References

PSIRT@sonicwall.com (vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2025-40600?: CVE-2025-40600 is a critical-severity vulnerability in Sonicwall Nsa_2700, classified under Use of Externally-Controlled Format String. CVSS score: 9.8/10. Published 2025-07-29.
How severe is CVE-2025-40600?: Critical severity. CVSS v3 base score is 9.8 out of 10.