CVE-2020-10881

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.

CVSS v3.1

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

CVSS v3.0

9.8 CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v2.0

10.0 HIGHAV:N/AC:L/Au:N/C:C/I:C/A:C

EPSS

10.89% chance of exploitation in the next 30 days, 96th percentile

Published

2020-03-25

Updated

2024-08-04

Proof-of-concept exploits (1)

• hacefresko/CVE-2025-4063431★ · 2025-10-16

References

• CVE Record
• NVD entry

Related

• CVE-2021-4045
• CVE-2025-40634
• CVE-2020-10879
• CVE-2020-10882
• CVE-2020-10875
• CVE-2020-10883