Description
A stack-based buffer overflow in /cgi-bin/activate.cgi through var parameter on Draytek Vigor3900, Vigor2960, and Vigor300B devices before 1.5.1 allows remote attackers to achieve code execution via a remote HTTP request (issue 1 of 3).
References (2)
Core 2
Core References
Exploit, Third Party Advisory x_refsource_misc
https://slashd.ga/2020/03/draytek-vulnerabilities/
Various Sources x_refsource_confirm
https://www.draytek.com/about/security-advisory/vigor3900-/-vigor2960-/-vigor300b-stack-based-buffer-overflow-vulnerability/
Scores
CVSS v3
9.8
EPSS
0.0432
EPSS Percentile
90.0%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
yes
Technical Impact
total
Details
CWE
CWE-787
Status
published
Products (3)
draytek/vigor2960_firmware
< 1.5.1
draytek/vigor300b_firmware
< 1.5.1
draytek/vigor3900_firmware
< 1.5.1
Published
Mar 26, 2020
Tracked Since
Feb 18, 2026