CVE-2021-35003

moderate-risk
Published 2022-01-21

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.

Do I need to act?

!
10.6% chance of exploitation in next 30 days
EPSS score — higher than 89% of all CVEs
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.8/10 Critical
NETWORK / LOW complexity

Affected Products (1)

Affected Vendors

Tp-Link

References (2)

Third Party Advisory https://www.zerodayinitiative.com/advisories/ZDI-22-080/
Third Party Advisory https://www.zerodayinitiative.com/advisories/ZDI-22-080/
48
/ 100
moderate-risk
Severity 32/34 · Critical
Exploitability 11/34 · Low
Exposure 5/34 · Minimal