CVE-2025-40601 — Stack-based Buffer Overflow in Sonicos

CWE-121 — Stack-based Buffer Overflow4 documents4 sources
Severity
7.5HIGHNVD
EPSS
0.1%
top 82.01%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
1
Sonicwall Sonicos
Timeline
PublishedNov 20

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.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitability: 3.9 | Impact: 3.6

Affected Packages2 packages

▶NVDsonicwall/sonicos7.1.1-7040 — 7.3.1-7013+1
▶CVEListV5sonicwall/sonicos7.3.0-7012 and older versions, 8.0.2-8011 and older versions+1

🔴Vulnerability Details

2
CVEList
CVE-2025-40601: A Stack-based buffer overflow vulnerability in the SonicOS SSLVPN service allows a remote unauthenticated attacker to cause Denial of Service (DoS), w↗2025-11-20
▶
GHSA
GHSA-4h6c-rhpp-q86h: A Stack-based buffer overflow vulnerability in the SonicOS SSLVPN service allows a remote unauthenticated attacker to cause Denial of Service (DoS), w↗2025-11-20
▶

🕵️Threat Intelligence

1
Bleepingcomputer
New SonicWall SonicOS flaw allows hackers to crash firewalls↗2025-11-20
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CVE-2025-40601 — Stack-based Buffer Overflow in Sonicos | cvebase