High severity · published Jul 23, 2025
CVE-2025-40596
A Stack-based buffer overflow vulnerability in the SMA100 series web interface allows remote, unauthenticated attacker to cause Denial of Service (DoS) or potentially results in…
7.3
CVSS
45.3%
EPSS
No
On KEV
Description
A Stack-based buffer overflow vulnerability in the SMA100 series web interface allows remote, unauthenticated attacker to cause Denial of Service (DoS) or potentially results in code execution.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)45.3% · higher than 99% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
S2
Sma 210 Firmware · Sonicwall
before 10.2.2.1-90sv · source: NVD
S4
Sma 410 Firmware · Sonicwall
before 10.2.2.1-90sv · source: NVD
S5
Sma 500v Firmware · Sonicwall
before 10.2.2.1-90sv · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-40596
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-40596
Vendor Advisory
https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2025-0012
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