Vulnerability · Published Nov 20, 2025 · Assigned by sonicwall
CVE-2025-40601
High 7.5
In plain English
A high-severity stack buffer overflow in SonicOS from SonicWall. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.9% (higher than 60% of all known vulnerabilities).
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.9%top 39.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
A Stack-based buffer overflow vulnerability in the SonicOS SSLVPN service allows a remote unauthenticated attacker to cause Denial of Service (DoS), which could cause an impacted firewall to crash.
Affected products (as reported)
Weakness: CWE-121 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
- https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2025-0016 vendor-advisory