CVE-2023-28703: asus rt-ac86u_firmware Stack-based Buffer Overflow

Vulnerability summary

CVE-2023-28703 is a high (CVSS 7.2) Stack-based Buffer Overflow vulnerability in asus rt-ac86u_firmware. EPSS estimates a 0.89% chance of exploitation in the next 30 days, higher than 58.6% of scored vulnerabilities.

Timeline

1. 02-06-2023
   PublishedVulnerability first disclosed.
2. 08-01-2025
   Last modifiedVulnerability information updated.

Description

ASUS RT-AC86U’s specific cgi function has a stack-based buffer overflow vulnerability due to insufficient validation for network packet header length. A remote attacker with administrator privileges can exploit this vulnerability to execute arbitrary system commands, disrupt system or terminate service.

• 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).