CVE-2021-35003 — CRITICAL (9.8)

Vulnerability 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.

CVSS Score

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Tp-Link	Archer C90 Firmware	1.0.6
Tp-Link	Archer C90	-

Related Weaknesses (CWE)

CWE-121

References

https://www.zerodayinitiative.com/advisories/ZDI-22-080/Third Party AdvisoryVDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-22-080/Third Party AdvisoryVDB Entry

FAQ

What is CVE-2021-35003?

CVE-2021-35003 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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 exp...

How severe is CVE-2021-35003?

CVE-2021-35003 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2021-35003?

Check the references section above for vendor advisories and patch information. Affected products include: Tp-Link Archer C90 Firmware, Tp-Link Archer C90.