Executive Summary



This Alert is flagged as TOP 25 Common Weakness Enumeration from CWE/SANS. For more information, you can read this.
Informations
Name CVE-2021-42911 First vendor Publication 2022-03-29
Vendor Cve Last vendor Modification 2024-11-21

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Overall CVSS Score 9.8
Base Score 9.8 Environmental Score 9.8
impact SubScore 5.9 Temporal Score 9.8
Exploitabality Sub Score 3.9
 
Attack Vector Network Attack Complexity Low
Privileges Required None User Interaction None
Scope Unchanged Confidentiality Impact High
Integrity Impact High Availability Impact High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:P/I:P/A:P)
Cvss Base Score 7.5 Attack Range Network
Cvss Impact Score 6.4 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

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.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-42911

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-134 Uncontrolled Format String (CWE/SANS Top 25)

CPE : Common Platform Enumeration

TypeDescriptionCount
Os 4
Os 5
Os 3

Sources (Detail)

https://gist.github.com/Cossack9989/e9c1c2d2e69b773ca4251acdd77f2835
Source Url

Alert History

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Date Informations
2025-05-27 13:05:45
  • Multiple Updates
2024-11-28 14:01:56
  • Multiple Updates
2022-04-06 00:22:56
  • Multiple Updates
2022-03-30 17:22:55
  • Multiple Updates
2022-03-30 00:22:50
  • First insertion