Vulnerability · Published Oct 20, 2026 · Assigned by VulDB
CVE-2026-113390DrayTek Vigor2960 CGI mainfunction.cgi sub_182B0 os command injection
Critical 9.9
In plain English
A critical-severity OS command injection in Vigor2960 from DrayTek. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 1.9% (higher than 79% of all known vulnerabilities).
Official description
A flaw has been found in DrayTek Vigor2960 1.5.1.6 Revision 8218. Affected by this issue is the function sub_182B0 of the file /cgi-bin/mainfunction.cgi of the component CGI Interface. This manipulation of the argument usefile/usescript/option causes os command injection. Remote exploitation of the attack is possible. The exploit has been published and may be used. The vendor explains: "2960 1.5.1.7 has corrected many security issues. And 2960 is EoS with limited support, only major issues would be reviewed(e.g. unauthenticated vuln.)". This vulnerability only affects products that are no longer supported by the maintainer.
Affected products (as reported)
Weakness: CWE-78, CWE-77 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R
References
- VDB-422666 | DrayTek Vigor2960 CGI mainfunction.cgi sub_182B0 os command injection vdb-entry, technical-description
- VDB-422666 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
- CVE-2026-113390 | CVE Analysis and Report third-party-advisory
- Submit #992224 | DrayTek Vigor2960 Vigor2960 1.5.1.6 (revision 8218) Authenticated jsonstatus File Operations and Multi-Sink Command third-party-advisory
- https://github.com/yikesoftware/DrayTek_Vigor2960_Security_Analysis/tree/main/cases/DRV2960-0007-authenticated-jsonstatus-usefile-file-clobber exploit