CVE-2020-14993

A stack-based buffer overflow on DrayTek Vigor2960, Vigor3900, and Vigor300B devices before 1.5.1.1 allows remote attackers to execute arbitrary code via the formuserphonenumber parameter in an authusersms action to mainfunction.cgi.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
9.8 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
mitreCNA
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CVEADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 90%
VendorProductVersion
draytekvigor300b_firmware
𝑥
< 1.5.1.1
draytekvigor2960_firmware
𝑥
< 1.5.1.1
draytekvigor3900_firmware
𝑥
< 1.5.1.1
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://github.com/dexterone/Vigor-poc
https://www.draytek.com/about/security-advisory
https://www.draytek.com/about/security-advisory/vigor3900-/-vigor2960-/-vigor300b-stack-based-buffer-overflow-vulnerability-%28cve-2020-14473%29
https://github.com/dexterone/Vigor-poc
https://www.draytek.com/about/security-advisory
https://www.draytek.com/about/security-advisory/vigor3900-/-vigor2960-/-vigor300b-stack-based-buffer-overflow-vulnerability-%28cve-2020-14473%29