CVE-2025-40596 Memory corruption in SMA 100 Series
Remote unauthenticated attackers can cause denial of service or execute code via a stack-based buffer overflow in the SMA 100 web interface.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-40596?
CVE-2025-40596 is a high-severity memory corruption vulnerability in SonicWall SMA 100 Series, published on 23 Jul 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-121
Which versions are affected by CVE-2025-40596?
It affects 3 products.
Products include Sonicwall Sma 210 Firmware, Sonicwall Sma 410 Firmware, Sonicwall Sma 500v Firmware.
How do I fix CVE-2025-40596?
No fix has been published for CVE-2025-40596 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2025-40596 being exploited?
There is no known exploitation of CVE-2025-40596 in the wild and no public exploit code.
Other vulnerabilities in SonicWall SMA 100 Series
Sources
Also known as GHSA-9c9q-24rh-frhg.