CVE-2021-27246 — HIGH (8.0)

Vulnerability Description

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.

CVSS Score

8.0

HIGH

CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector

ADJACENT_NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Tp-Link	Ac1750 Firmware	1.0.15
Tp-Link	Ac1750	a7

Related Weaknesses (CWE)

CWE-121

References

https://www.zerodayinitiative.com/advisories/ZDI-21-215/Third Party AdvisoryVDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-21-215/Third Party AdvisoryVDB Entry

FAQ

What is CVE-2021-27246?

CVE-2021-27246 is a vulnerability with a CVSS score of 8.0 (HIGH). 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 vuln...

How severe is CVE-2021-27246?

CVE-2021-27246 has been rated HIGH with a CVSS base score of 8.0/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-27246?

Check the references section above for vendor advisories and patch information. Affected products include: Tp-Link Ac1750 Firmware, Tp-Link Ac1750.