CVE-2021-27246
This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of TP-Link Archer A7 AC1750 1.0.15 routers....
- Published
- Apr 14, 2021
- Updated
- Aug 3, 2024
- Assigning CNA
- zdi
- Evidence observed
- Aug 5, 2026
Primary CVSS
nvd · CVSS 3.1
CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HLow · next 30 days
- Percentile
- 93.6%
- Model date
- Sep 21, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
Summary
This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of TP-Link Archer A7 AC1750 1.0.15 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of MAC addresses by the tdpServer endpoint. A crafted TCP message can write stack pointers to the stack. An attacker can leverage this vulnerability to execute code in the context of the root user. Was ZDI-CAN-12306.
Sources
1- CVE-2021-27246_Pwn2Own2020Exploit
Exploit code for CVE-2021-27246 targeting TPLink Archer routers, demonstrated at Pwn2Own 2020 Tokyo. Includes proof-of-concept for remote code execution on embedded devices.
Responsible use
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