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TI-2021-13990 Aliases CVE-2021-35003GHSA-rhx8-wcjx-qf76

Stack-based buffer overflow in TP-Link Archer C90

Priority MEDIUM 53CWE-121Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-121 and the CVSS impact.

Summary

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.

Why it matters now

EPSS 0.07743 94th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
TP-LinkArcher C901.0.6 Build 20200114 rel.73164(5553)—No fix listedCNA
  • Archer C90 VendorTP-Link Affected 1.0.6 Build 20200114 rel.73164(5553) Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:o:tp-link:archer_c90_firmware:1.0.6:build_20200114:*:*:*:*:*:*1.0.6 build_20200114VulnerableTP-Link
cpe:2.3:h:tp-link:archer_c90:-:*:*:*:*:*:*:*not specified by NVDRunning onTP-Link
  • cpe:2.3:o:tp-link:archer_c90_firmware:1.0.6:build_20200114:*:*:*:*:*:* Versions 1.0.6 build_20200114 Vulnerable ·TP-Link
  • cpe:2.3:h:tp-link:archer_c90:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·TP-Link

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-35003
  2. 2026-10-03 Alias added: GHSA-rhx8-wcjx-qf76

References

Advisory 1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences