CVE-2026-113393: medium-severity vulnerability in DrayTek Vigor2960
DrayTek Vigor2960 commonupload mainfunction.cgi unrestricted upload
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
33Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 5.3epss 0.3%
A vulnerability was determined in DrayTek Vigor2960 1.5.1.6 Revision 8218. This issue affects some unknown processing of the file /cgi-bin/mainfunction.cgi of the component commonupload. Executing a manipulation of the argument upload_path/upload_name can lead to unrestricted upload. The attack may be performed from remote. The exploit has been publicly disclosed and may be utilized. Upgrading to version 1.5.1.7 is capable of addressing this issue. It is advisable 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:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
Affected products
DrayTek · Vigor2960public PoCs found — 1
cve_referencegithub.com/yikesoftware/DrayTek_Vigor2960_Security_Analysis/tree/main/cases/DRV2960-0010-authenticated-commonupload-arbitrary-file-clobberunverified⚠ 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-2026-113391CRITICALDrayTek Vigor2960 Upload Endpoint mainfunction.cgi uploadlangs command injectionEPSS 2.1%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%
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/DRV2960-0010-authenticated-commonupload-arbitrary-file-clobberhttps://vuldb.com/cve/CVE-2026-113393https://vuldb.com/submit/992246https://vuldb.com/vuln/422669https://vuldb.com/vuln/422669/cti