D-Link DIR-816L Buffer Overflow via genacgi_main in gena.cgi
CVE-2025-13189 Published on November 15, 2025
D-Link DIR-816L gena.cgi genacgi_main stack-based overflow
A vulnerability has been found in D-Link DIR-816L 2_06_b09_beta. This affects the function genacgi_main of the file gena.cgi. The manipulation of the argument SERVER_ID/HTTP_SID leads to stack-based buffer overflow. The attack is possible to be carried out remotely. The exploit has been disclosed to the public and may be used. This vulnerability only affects products that are no longer supported by the maintainer.
Timeline
Advisory disclosed
VulDB entry created
VulDB entry last update
Weakness Types
What is a Stack Overflow Vulnerability?
A 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).
CVE-2025-13189 has been classified to as a Stack Overflow vulnerability or weakness.
What is a Buffer Overflow Vulnerability?
The software performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer.
CVE-2025-13189 has been classified to as a Buffer Overflow vulnerability or weakness.
Affected Versions
D-Link DIR-816L Version 2_06_b09_beta is affected by CVE-2025-13189Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.