Quick answers
- Is CVE-2026-113396 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-113396 being exploited in the wild.
- How severe is CVE-2026-113396?
- High severity, with a CVSS score of 7.4, published 20 October 2026.
- Which products and versions are affected?
- DrayTek Vigor2960 1.5.1.6 revision 8218.
- Is there a fix for CVE-2026-113396?
- Yes: fixed in 1.5.1.7. Until then: Restrict administrative access to the device web interface to trusted networks only; consider disabling remote management until the device can be upgraded to a supported firmware version. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-113396 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2026-113396?
- Check whether you run DrayTek Vigor2960 at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
How to fix
- Fixed in: 1.5.1.7
Restrict administrative access to the device web interface to trusted networks only; consider disabling remote management until the device can be upgraded to a supported firmware version.
Technical details
The rename_table function in /cgi-bin/mainfunction.cgi concatenates the attacker-controlled newtable parameter directly into a shell command without sanitization, allowing command injection via quote breakout. An authenticated attacker can break out of the single-quoted context and execute arbitrary shell commands with CGI process privileges, including establishing reverse shells. The vulnerability exists in firmware version 1.5.1.6 revision 8218 and is fixed in version 1.5.1.7.
Affected products
- DrayTek Vigor2960 1.5.1.6 revision 8218
Timeline
- 2026-10-20: disclosed
- 2026-10-20: patched: Version 1.5.1.7 released