CVE-2021-35003

CRITICAL

TP-Link Archer C90 1.0.6 - Unauthenticated Stack-based Buffer Overflow via DNS

Title source: llm

Description

This vulnerability allows remote attackers to execute arbitrary code on affected installations of TP-Link Archer C90 1.0.6 Build 20200114 rel.73164(5553) routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of DNS responses. A crafted DNS message can trigger an overflow of a fixed-length, stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-14655.

References (1)

Core 1

Core References

Third Party Advisory, VDB Entry x_refsource_misc

https://www.zerodayinitiative.com/advisories/ZDI-22-080/

Scores

CVSS v3 9.8

EPSS 0.1058

EPSS Percentile 93.4%

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-121

Status published

Products (1)

tp-link/archer_c90_firmware 1.0.6 build_20200114

Published Jan 21, 2022

Tracked Since Feb 18, 2026