CVE-2025-5600: totolink ex1200t_firmware

Vulnerability summary

CVE-2025-5600 is a high (CVSS 10.0) vulnerability in totolink ex1200t_firmware. EPSS estimates a 1.23% chance of exploitation in the next 30 days, higher than 68.5% of scored vulnerabilities. 1 public exploit is recorded.

Timeline

1. 04-06-2025
   PublishedVulnerability first disclosed.
2. 04-06-2025
   Last modifiedVulnerability information updated.

Description

A vulnerability, which was classified as critical, has been found in TOTOLINK EX1200T 4.1.2cu.5232_B20210713. This issue affects the function setLanguageCfg of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument LangType leads to stack-based buffer overflow. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used.

• CWE-119Improper Restriction of Operations within the Bounds of a Memory BufferThe product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
• 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).
• CWE-787Out-of-bounds WriteThe product writes data past the end, or before the beginning, of the intended buffer.