TI-2026-76867 Aliases CVE-2026-113390 GHSA-r5pp-rj98-9f7m

OS command injection in DrayTek Vigor2960 mainfunction.cgi

HIGH 76CWE-77Published 2026-10-20 · Updated 2026-10-22

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Attack requirements: None
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-77.

Summary

DrayTek Vigor2960 from 1.5.1.6 Revision 8218 is affected. The sub_182B0 function in the /cgi-bin/mainfunction.cgi CGI interface does not neutralize special elements in the usefile, usescript and option arguments, which allows OS command injection (CWE-78). A remote attacker with low privileges can run operating system commands, and a public exploit has been published and is linked in the references. The vendor lists the product as end of support.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.01863 79th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by the CNA

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
DrayTek	Vigor2960	1.5.1.6 Revision 8218	—	No fix listed	CNA

Vigor2960 VendorDrayTek Affected 1.5.1.6 Revision 8218 Fixed in — No fix listed CNA

CPE names CNA · 1

CPE	Versions	Role	Vendor
cpe:2.3:o:draytek:vigor2960_firmware::::::::	—	—	DrayTek

cpe:2.3:o:draytek:vigor2960_firmware:*:*:*:*:*:*:*:* Versions — — ·DrayTek

Remediation

The sources list no fixed version for DrayTek Vigor2960.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Timeline

2026-10-20 Threatist record created from CVE-2026-113390
2026-10-20 Alias added: GHSA-r5pp-rj98-9f7m
2026-10-23 CISA SSVC decision points changed
2026-10-23 Priority changed: MEDIUM → HIGH

References

Exploit 1

https://github.com/yikesoftware/DrayTek_Vigor2960_Security_Analysis/tree/main/cases/DRV2960-0007-authenticated-jsonstatus-usefile-file-clobber

TI-2020-12150 On DrayTek Vigor3900, Vigor2960, and Vigor300B devices before 1.5.1… KEVCVSS 3.1CRITICAL 9.8
TI-2020-06834 DrayTek Vigor2960 1.3.1_Beta, Vigor3900 1.4.4_Beta, and Vigor300B 1.3.3_Beta… KEVCVSS 3.1CRITICAL 9.8
TI-2024-12038 DrayTek Vigor2960/Vigor300B Web Management Interface apmcfgupload os command injection KEVCVSS 4.0MEDIUM 6.9
TI-2021-03424 Path traversal in Draytek VigorConnect KEVCVSS 3.1HIGH 7.5
TI-2021-03423 Path traversal in Draytek VigorConnect KEVCVSS 3.1HIGH 7.5
TI-2024-34310 In Draytek Vigor3900 1.5.1.3, attackers can inject malicious commands into… CVSS 3.1CRITICAL 9.8

See all 184 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences