CVE-2021-42911
CRITICALDraytek Vigor2960 Firmware < 1.5.1.3 - Format String Vulnerability
Title source: ruleDescription
A Format String vulnerability exists in DrayTek Vigor 2960 <= 1.5.1.3, DrayTek Vigor 3900 <= 1.5.1.3, and DrayTek Vigor 300B <= 1.5.1.3 in the mainfunction.cgi file via a crafted HTTP message containing malformed QUERY STRING, which could let a remote malicious user execute arbitrary code.
Scores
CVSS v3
9.8
EPSS
0.0387
EPSS Percentile
88.3%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Details
CWE
CWE-134
Status
published
Products (3)
draytek/vigor2960_firmware
< 1.5.1.3
draytek/vigor300b_firmware
< 1.5.1.3
draytek/vigor3900_firmware
< 1.5.1.3
Published
Mar 29, 2022
Tracked Since
Feb 18, 2026