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TI-2020-08766 Aliases CVE-2020-10885GHSA-vxvp-772h-vpg4

Improper input validation in TP-Link Archer A7

Priority MEDIUM 51CWE-20Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

This vulnerability allows remote attackers to execute arbitrary code on affected installations of TP-Link Archer A7 Firmware Ver: 190726 AC1750 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of DNS responses. The issue results from the lack of proper validation of DNS reponses prior to further processing. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of the root user. Was ZDI-CAN-9661.

Why it matters now

EPSS 0.06534 93rd 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 A7Firmware Ver: 190726—No fix listedCNA
  • Archer A7 VendorTP-Link Affected Firmware Ver: 190726 Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:o:tp-link:ac1750_firmware:190726:*:*:*:*:*:*:*190726VulnerableTP-Link
cpe:2.3:h:tp-link:ac1750:-:*:*:*:*:*:*:*not specified by NVDRunning onTP-Link
  • cpe:2.3:o:tp-link:ac1750_firmware:190726:*:*:*:*:*:*:* Versions 190726 Vulnerable ·TP-Link
  • cpe:2.3:h:tp-link:ac1750:-:*:*:*:*:*:*:* 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-2020-10885
  2. 2026-10-03 Alias added: GHSA-vxvp-772h-vpg4

References

Advisory 1

  • TI-2020-17194 tdpServer on TP-Link Archer A7 AC1750 devices before 201029 allows remote attackers to… CVSS 3.1CRITICAL 9.8
  • TI-2020-08763 OS command injection in TP-Link Archer A7 CVSS 3.1HIGH 8.8
  • TI-2020-08765 Hard-coded credentials in TP-Link Archer A7 CVSS 3.1HIGH 8.8
  • TI-2020-08762 Stack-based buffer overflow in TP-Link Archer A7 CVSS 3.1CRITICAL 9.8
  • TI-2020-08767 OS command injection in TP-Link Archer A7 CVSS 3.1CRITICAL 9.8
  • TI-2020-08769 Improper authentication in TP-Link Archer A7 CVSS 3.1CRITICAL 9.8
See all 12 →

Sources

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