Vulnerability · Published May 25, 2026 · Assigned by VulDB
CVE-2026-9456Totolink A8000RU Web Management cstecgi.cgi setOpenVpnCfg os command injection
Critical 9.8
In plain English
A critical-severity OS command injection in A8000RU from Totolink. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 1.9% (higher than 80% of all known vulnerabilities).
Severity (CVSS 3.1)9.8Critical
Exploit odds (30 days)1.9%top 20.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
A vulnerability was found in Totolink A8000RU 7.1cu.643_b20200521. Impacted is the function setOpenVpnCfg of the file /cgi-bin/cstecgi.cgi of the component Web Management Interface. The manipulation of the argument enabled results in os command injection. The attack can be executed remotely. The exploit has been made public and could 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:H/I:H/A:H/E:P/RL:X/RC:R
References
- VDB-365437 | Totolink A8000RU Web Management cstecgi.cgi setOpenVpnCfg os command injection vdb-entry, technical-description
- VDB-365437 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
- Submit #813452 | Totolink A8000RU 7.1cu.643_b20200521 Command Injection third-party-advisory
- https://github.com/Litengzheng/vuldb_new2/blob/main/A8000RU/vul_344/README.md exploit
- https://www.totolink.net/ product