Critical severity9.8NVD Advisory· Published Jun 1, 2023· Updated Jun 17, 2026
CVE-2023-33778
CVE-2023-33778
Description
Draytek Vigor Routers firmware versions below 3.9.6/4.2.4, Access Points firmware versions below v1.4.0, Switches firmware versions below 2.6.7, and Myvigor firmware versions below 2.3.2 were discovered to use hardcoded encryption keys which allows attackers to bind any affected device to their own account. Attackers are then able to create WCF and DrayDDNS licenses and synchronize them from the website.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
77- cpe:2.3:o:draytek:vigor2926_plus_firmware:*:*:*:*:*:*:*:*Range: <3.9.6
- cpe:2.3:o:draytek:vigorswitch_fx2120_firmware:*:*:*:*:*:*:*:*Range: <2.6.7
- cpe:2.3:o:draytek:vigorswitch_g1080_firmware:*:*:*:*:*:*:*:*Range: <2.6.7
- cpe:2.3:o:draytek:vigorswitch_g1085_firmware:*:*:*:*:*:*:*:*Range: <2.6.7
- cpe:2.3:o:draytek:vigorswitch_g1282_firmware:*:*:*:*:*:*:*:*Range: <2.6.7
- cpe:2.3:o:draytek:vigorswitch_g2100_firmware:*:*:*:*:*:*:*:*Range: <2.6.7
- cpe:2.3:o:draytek:vigorswitch_g2121_firmware:*:*:*:*:*:*:*:*Range: <2.6.7
- cpe:2.3:o:draytek:vigorswitch_g2280x_firmware:*:*:*:*:*:*:*:*Range: <2.6.7
- cpe:2.3:o:draytek:vigorswitch_g2540xs_firmware:*:*:*:*:*:*:*:*Range: <2.6.7
- cpe:2.3:o:draytek:vigorswitch_p1282_firmware:*:*:*:*:*:*:*:*Range: <2.6.7
- cpe:2.3:o:draytek:vigorswitch_p2100_firmware:*:*:*:*:*:*:*:*Range: <2.6.7
- cpe:2.3:o:draytek:vigorswitch_p2280x_firmware:*:*:*:*:*:*:*:*Range: <2.6.7
- cpe:2.3:o:draytek:vigorswitch_p2540xs_firmware:*:*:*:*:*:*:*:*Range: <2.6.7
- cpe:2.3:o:draytek:vigorswitch_pq2121x_firmware:*:*:*:*:*:*:*:*Range: <2.6.7
- cpe:2.3:o:draytek:vigorswitch_pq2200xb_firmware:*:*:*:*:*:*:*:*Range: <2.6.7
- cpe:2.3:o:draytek:vigorswitch_q2121x_firmware:*:*:*:*:*:*:*:*Range: <2.6.7
- cpe:2.3:o:draytek:vigorswitch_q2200x_firmware:*:*:*:*:*:*:*:*Range: <2.6.7
(expand)+ 1 more
- (no CPE)
- (no CPE)range: <3.9.6
- Range: <v1.4.0
Patches
Vulnerability mechanics
References
1- gist.github.com/Ji4n1ng/6d028709d39458f5ab95b3ea211225efnvdExploitThird Party Advisory
News mentions
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