Vulnerability · Published Jun 20, 2025 · Assigned by VulDB

CVE-2025-6302TOTOLINK EX1200T cstecgi.cgi setStaticDhcpConfig stack-based overflow

High 8.8

In plain English

A high-severity stack buffer overflow in EX1200T from TOTOLINK. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 1.0% (higher than 62% of all known vulnerabilities).

Severity (CVSS 3.1)8.8High

Exploit odds (30 days)1.0%top 37.7% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

A vulnerability, which was classified as critical, was found in TOTOLINK EX1200T 4.1.2cu.5232_B20210713. Affected is the function setStaticDhcpConfig of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument Comment leads to stack-based buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used.

Affected products (as reported)

Vendor	Product	Versions
TOTOLINK	EX1200T	4.1.2cu.5232_B20210713

Weakness: CWE-121, CWE-119 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R

References

VDB-313302 | TOTOLINK EX1200T cstecgi.cgi setStaticDhcpConfig stack-based overflow vdb-entry, technical-description
VDB-313302 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
Submit #595473 | TOTOLINK EX1200T EX1200T V4.1.2cu.5232_B20210713 stack-based buffer overflow third-party-advisory
https://kn0sinna.notion.site/TOTOLINK-EX1200T-stack-based-BufferOverflow-vulnerability-20fb1876cd6e80d5b4d1f7ec16de4ec2 exploit
https://www.totolink.net/ product