Critical severity · published Oct 20, 2026
CVE-2026-113391
DrayTek Vigor2960 Upload Endpoint mainfunction.cgi uploadlangs command injection
9.9
CVSS
2.1%
EPSS
No
On KEV
Description
A vulnerability has been found in DrayTek Vigor2960 1.5.1.6 Revision 8218. This affects the function uploadlangs of the file /cgi-bin/mainfunction.cgi of the component Upload Endpoint. Such manipulation leads to command injection. The attack can be executed remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 1.5.1.7 is able to mitigate this issue. It is recommended to upgrade the affected component. 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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)2.1% · higher than 81% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
VI
Vigor2960 · DrayTek
1.5.1.6 Revision 8218 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-113391
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-113391
fw.draytek.com.tw
https://fw.draytek.com.tw/Vigor2960/Firmware/v1.5.1.7/Vigor2960_v1.5.1.7.zip
github.com
https://github.com/yikesoftware/DrayTek_Vigor2960_Security_Analysis/tree/main/cases/DRV2960-0008-authenticated-upload-filename-command-injection
vuldb.com
https://vuldb.com/cve/CVE-2026-113391
vuldb.com
https://vuldb.com/submit/992244
vuldb.com
https://vuldb.com/vuln/422667
vuldb.com
https://vuldb.com/vuln/422667/cti
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