Vulnerability · Published Jan 28, 2026 · Assigned by VulDB
CVE-2026-1548Totolink A7000R cstecgi.cgi CloudACMunualUpdateUserdata 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 3.4% (higher than 89% of all known vulnerabilities).
Severity (CVSS 3.1)6.3Medium
Exploit odds (30 days)3.4%top 11.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
A flaw has been found in Totolink A7000R 4.1cu.4154. This impacts the function CloudACMunualUpdateUserdata of the file /cgi-bin/cstecgi.cgi. This manipulation of the argument url causes command injection. The attack can be initiated remotely. The exploit has been published 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-343232 | Totolink A7000R cstecgi.cgi CloudACMunualUpdateUserdata command injection vdb-entry, technical-description
- VDB-343232 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
- Submit #739715 | TOTOLINK A7000R V4.1cu.4154 Command Injection third-party-advisory
- https://github.com/xyh4ck/iot_poc/blob/main/TOTOLINK/A7000R/02_RCE_CloudACMunualUpdateUserdata_RCE.md exploit, patch
- https://github.com/xyh4ck/iot_poc/blob/main/TOTOLINK/A7000R/02_RCE_CloudACMunualUpdateUserdata_RCE.md#poc exploit, patch
- https://www.totolink.net/ product