CVE-2026-22316: phoenix contact fl nat 2008 Stack-based Buffer Overflow

Vulnerability summary

CVE-2026-22316 is a medium (CVSS 6.5) Stack-based Buffer Overflow vulnerability in phoenix contact fl nat 2008. EPSS estimates a 0.39% chance of exploitation in the next 30 days, higher than 31.9% of scored vulnerabilities.

Timeline

1. 18-03-2026
   PublishedVulnerability first disclosed.
2. 18-03-2026
   Last modifiedVulnerability information updated.

Description

A remote attacker with user privileges for the webUI can use the setting of the TFTP Filename with a POST Request to trigger a stack-based Buffer Overflow, resulting in a DoS attack.

• CWE-121Stack-based Buffer OverflowA stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).