Vulnerability · Published Jan 6, 2026 · Assigned by VulDB
CVE-2026-0641TOTOLINK WA300 cstecgi.cgi sub_401510 command injection
Medium 6.3
In plain English
A medium-severity command injection in WA300 from TOTOLINK. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 2.6% (higher than 86% of all known vulnerabilities).
Severity (CVSS 3.1)6.3Medium
Exploit odds (30 days)2.6%top 14.3% 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 WA300 5.2cu.7112_B20190227. This vulnerability affects the function sub_401510 of the file cstecgi.cgi. The manipulation of the argument UPLOAD_FILENAME leads to command injection. The attack may be initiated remotely. The exploit has been disclosed publicly and may be used.
Affected products (as reported)
Weakness: CWE-77, CWE-74 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
References
- VDB-339684 | TOTOLINK WA300 cstecgi.cgi sub_401510 command injection vdb-entry, technical-description
- VDB-339684 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
- Submit #732234 | TOTOLINK WA300 V5.2cu.7112_B20190227 Command Injection third-party-advisory
- https://github.com/JackWesleyy/CVE/blob/main/WA300/TOTOLINK_WA300_RCE.md related
- https://github.com/JackWesleyy/CVE/blob/main/WA300/TOTOLINK_WA300_RCE.md#poc exploit
- https://www.totolink.net/ product