Vulnerability · Published Jan 29, 2026 · Assigned by VulDB
CVE-2026-1623Totolink A7000R cstecgi.cgi setUpgradeFW command injection
Medium 6.3
In plain English
A medium-severity command injection in A7000R from Totolink. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 2.4% (higher than 84% of all known vulnerabilities).
Severity (CVSS 3.1)6.3Medium
Exploit odds (30 days)2.4%top 16.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
A weakness has been identified in Totolink A7000R 4.1cu.4154. Impacted is the function setUpgradeFW of the file /cgi-bin/cstecgi.cgi. This manipulation of the argument FileName causes command injection. The attack can be initiated remotely. The exploit has been made available to the public and could be used for attacks.
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-343382 | Totolink A7000R cstecgi.cgi setUpgradeFW command injection vdb-entry, technical-description
- VDB-343382 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
- Submit #740767 | TOTOLINK A7000R V4.1cu.4154 Command Injection third-party-advisory
- https://github.com/xyh4ck/iot_poc/blob/main/TOTOLINK/A7000R/04_RCE_setUpgradeFW_RCE.md exploit, patch
- https://github.com/xyh4ck/iot_poc/blob/main/TOTOLINK/A7000R/04_RCE_setUpgradeFW_RCE.md#poc exploit, patch
- https://www.totolink.net/ product