Vulnerability · Published Aug 17, 2026 · Assigned by VulDB

CVE-2026-75012TOTOLINK EX1200L Password Configuration cstecgi.cgi setPasswordCfg null pointer dereference

Medium 6.5

In plain English

A medium-severity null pointer dereference in EX1200L from TOTOLINK. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 52% of all known vulnerabilities).

Severity (CVSS 3.1)6.5Medium

Exploit odds (30 days)0.7%top 48.4% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

A security vulnerability has been detected in TOTOLINK EX1200L 9.3.5u.6146_B20201023. Affected by this issue is the function setPasswordCfg of the file /cgi-bin/cstecgi.cgi of the component Password Configuration Handler. The manipulation leads to null pointer dereference. The attack can be initiated remotely. The exploit has been disclosed publicly and may be used.

Affected products (as reported)

Vendor	Product	Versions
TOTOLINK	EX1200L	9.3.5u.6146_B20201023

Weakness: CWE-476, CWE-404 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:P/RL:X/RC:R

References

VDB-391272 | TOTOLINK EX1200L Password Configuration cstecgi.cgi setPasswordCfg null pointer dereference vdb-entry, technical-description
VDB-391272 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
CVE-2026-75012 | CVE Analysis and Report third-party-advisory
Submit #876022 | Totolink EX1200L Firmware V9.3.5u.6146_B20201023 NULL Pointer Dereference third-party-advisory
https://gist.github.com/wyxstarry/afdc067090575c216a9d2622c3338e5c exploit
https://www.totolink.net/ product