CVE-2026-113391: critical vulnerability in DrayTek Vigor2960
DrayTek Vigor2960 Upload Endpoint mainfunction.cgi uploadlangs command injection
Published
48Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 9.4epss 2.1%
exploitation probability
2.1%top 19% of all CVEs
observed exploitation
nono source reports it
1 public exploit(s)
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:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P
Affected products
DrayTek · Vigor2960public PoCs found — 1
cve_referencegithub.com/yikesoftware/DrayTek_Vigor2960_Security_Analysis/tree/main/cases/DRV2960-0008-authenticated-upload-filename-command-injectionunverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
Related CVEs — DrayTek Vigor2960
In the same product, most dangerous first.
CVE-2024-12987MEDIUMDrayTek Vigor2960/Vigor300B Web Management Interface apmcfgupload os command injectionEPSS 98.2%KEVCVE-2024-12986MEDIUMDrayTek Vigor2960/Vigor300B Web Management Interface apmcfgupptim os command injectionEPSS 35.3%CVE-2026-113389CRITICALDrayTek Vigor2960 CGI Process mainfunction.cgi set_table command injectionEPSS 1.9%CVE-2026-113390CRITICALDrayTek Vigor2960 CGI mainfunction.cgi sub_182B0 os command injectionEPSS 1.9%CVE-2023-6265MEDIUMDrayTek Vigor2960 mainfunction.cgi dumpSyslog 'option' directory traversalEPSS 1.8%CVE-2026-113396MEDIUMDrayTek Vigor2960 Rename Table mainfunction.cgi rename_table command injectionEPSS 1.6%
References
https://fw.draytek.com.tw/Vigor2960/Firmware/v1.5.1.7/Vigor2960_v1.5.1.7.ziphttps://github.com/yikesoftware/DrayTek_Vigor2960_Security_Analysis/tree/main/cases/DRV2960-0008-authenticated-upload-filename-command-injectionhttps://vuldb.com/cve/CVE-2026-113391https://vuldb.com/submit/992244https://vuldb.com/vuln/422667https://vuldb.com/vuln/422667/cti