CVE-2025-40597: sonicwall sma 100 series Heap-based Buffer Overflow

Vulnerability summary

CVE-2025-40597 is a high (CVSS 7.5) Heap-based Buffer Overflow vulnerability in sonicwall sma 100 series. EPSS estimates a 31.25% chance of exploitation in the next 30 days, higher than 98.2% of scored vulnerabilities.

Timeline

1. 23-07-2025
   PublishedVulnerability first disclosed.
2. 26-02-2026
   Last modifiedVulnerability information updated.

Description

A Heap-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.

• CWE-122Heap-based Buffer OverflowA heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().