# CVE-2026-113396: DrayTek Vigor2960 command injection in rename table handler

Source: https://junglewise.ai/threats/cve-2026-113396-a-weakness-has-been-identified-in-draytek-vigor2960-1-5-1-6  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-20. Updated: 2026-10-20  
License: CC BY 4.0 with a link back

CVE-2026-113396 · Severity: high · CVSS 7.4 · Published 2026-10-20

DrayTek Vigor2960 is a networking appliance used in business environments to manage connectivity and configuration. A vulnerability in its web interface allows an authenticated administrator to execute arbitrary commands on the device by injecting shell code through a table rename function, potentially leading to full device compromise and lateral network attacks.

Technologies: [DrayTek Vigor2960](https://junglewise.ai/threats/technologies/vigor2960). Vendors: [DrayTek](https://junglewise.ai/threats/vendors/draytek).

## 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

## References

- [https://fw.draytek.com.tw/Vigor2960/Firmware/v1.5.1.7/Vigor2960_v1.5.1.7.zip](https://fw.draytek.com.tw/Vigor2960/Firmware/v1.5.1.7/Vigor2960_v1.5.1.7.zip)
- [https://github.com/yikesoftware/DrayTek_Vigor2960_Security_Analysis/tree/main/cases/DRV2960-0013-authenticated-rename-table-command-injection](https://github.com/yikesoftware/DrayTek_Vigor2960_Security_Analysis/tree/main/cases/DRV2960-0013-authenticated-rename-table-command-injection)

## Related threats

- [DrayTek Vigor2960 command injection in IPsec handler](https://junglewise.ai/threats/cve-2026-113397-a-security-vulnerability-has-been-detected-in-draytek-vigor2960)
- [DrayTek Vigor2960 path traversal in swmconfigupload](https://junglewise.ai/threats/cve-2026-113395-a-security-flaw-has-been-discovered-in-draytek-vigor2960-1-5-1-6)
- [DrayTek Vigor2960 path traversal and command injection in setSWMProfile](https://junglewise.ai/threats/cve-2026-113394-a-vulnerability-was-identified-in-draytek-vigor2960-1-5-1-6)
- [DrayTek Vigor2960 arbitrary file write in commonupload](https://junglewise.ai/threats/cve-2026-113393-a-vulnerability-was-determined-in-draytek-vigor2960-1-5-1-6)
- [DrayTek Vigor2960 path traversal in apmupload](https://junglewise.ai/threats/cve-2026-113392-a-vulnerability-was-found-in-draytek-vigor2960-1-5-1-6-revision)