CVEvulnerability

CVE-2021-42911

9.8 CRITICAL Published 2022-03-29 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2022-03-29
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0 ([email protected])
7.5 HIGH — AV:N/AC:L/Au:N/C:P/I:P/A:P
Weaknesses
CWE-134

Description

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.

Affected configurations

• draytek vigor2960 firmware (<= 1.5.1.3) • draytek vigor3900 firmware (<= 1.5.1.3) • draytek vigor300b firmware (<= 1.5.1.3)

Related

Weakness · CWE (1)

  • CWE-134 Use of Externally-Controlled Format String weakness

References