TI-2020-08762 Aliases CVE-2020-10881 GHSA-8w5p-3q5j-2w9h

Stack-based buffer overflow in TP-Link Archer A7

MEDIUM 54CWE-121Published 2020-03-25 · Updated 2024-08-04

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 A7 Firmware Ver: 190726 AC1750 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 the root user. Was ZDI-CAN-9660.

Why it matters now

EPSS 0.09282 95th 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

Vendor	Product	Affected versions	Fixed in	Status	Source
TP-Link	Archer A7	Firmware Ver: 190726	—	No fix listed	CNA

Archer A7 VendorTP-Link Affected Firmware Ver: 190726 Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPE	Versions	Role	Vendor
cpe:2.3:o:tp-link:ac1750_firmware:190726:::::::*	190726	Vulnerable	TP-Link
cpe:2.3:h:tp-link:ac1750:-:::::::*	not specified by NVD	Running on	TP-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

2026-10-02 Threatist record created from CVE-2020-10881
2026-10-03 Alias added: GHSA-8w5p-3q5j-2w9h

References

Advisory 1

https://www.zerodayinitiative.com/advisories/ZDI-20-333/

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-2020-08766 Improper input validation 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