QwikSec

Security Database

CVE

CWE

Training

CVE Database
/

CVE-2021-27245

Back to search

CVE-2021-27245

Published: Mar 29, 2021

Modified: Aug 3, 2024

PUBLISHED

CVSS v3.0

8.1

HIGH

Description

This vulnerability allows a firewall bypass on affected installations of TP-Link Archer A7 prior to Archer C7(US)_V5_210125 and Archer A7(US)_V5_200220 AC1750 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of IPv6 connections. The issue results from the lack of proper filtering of IPv6 SSH connections. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of root. Was ZDI-CAN-12309.

VendorProductVersions

TP-Link

Archer A7

affected
prior to Archer C7(US)_V5_210125 and Archer A7(US)_V5_200220

Weaknesses (CWE)

CWE-693

CVSS v3.0 Details

CVSS v3.0 Vector

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

References

Security Training

Train your team to recognize and prevent security threats with our comprehensive security awareness program.

Start Training

Vulnerability Scanning

Discover vulnerabilities in your applications and infrastructure before attackers do.

Scan Now