Vulnerability · Published Apr 6, 2026 · Assigned by VulDB
CVE-2026-5689Totolink A7100RU cstecgi.cgi setNtpCfg os command injection
High 7.3
In plain English
A high-severity OS command injection in A7100RU from Totolink. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 1.6% (higher than 76% of all known vulnerabilities).
Severity (CVSS 3.1)7.3High
Exploit odds (30 days)1.6%top 23.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
A vulnerability was detected in Totolink A7100RU 7.4cu.2313_b20191024. The affected element is the function setNtpCfg of the file /cgi-bin/cstecgi.cgi. Performing a manipulation of the argument tz results in os command injection. Remote exploitation of the attack is possible. The exploit is now public and may be used.
Affected products (as reported)
Weakness: CWE-78, CWE-77 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
References
- VDB-355516 | Totolink A7100RU cstecgi.cgi setNtpCfg os command injection vdb-entry, technical-description
- VDB-355516 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
- Submit #792946 | Totolink A7100RU 7.4cu.2313_b20191024 Command Injection third-party-advisory
- https://github.com/Litengzheng/vuldb_new/blob/main/A7100RU/vul_187/README.md exploit
- https://www.totolink.net/ product