CVE-2021-35003

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 7.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-01-21 · updated 2026-06-17
Weakness: CWE-121

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.

Affected products

TP-Link Archer C90: 1.0.6-build_20200114

References

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

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