CVE-2024-0998: totolink n200re_firmware Stack-based Buffer Overflow

Vulnerability summary

CVE-2024-0998 is a high (CVSS 8.8) Stack-based Buffer Overflow vulnerability in totolink n200re_firmware. EPSS estimates a 1.40% chance of exploitation in the next 30 days, higher than 72.2% of scored vulnerabilities. 1 public exploit is recorded.

Timeline

1. 29-01-2024
   PublishedVulnerability first disclosed.
2. 29-05-2025
   Last modifiedVulnerability information updated.

Description

A vulnerability was found in Totolink N200RE 9.3.5u.6139_B20201216. It has been classified as critical. This affects the function setDiagnosisCfg of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument ip leads to stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. The associated identifier of this vulnerability is VDB-252267. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

• 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).