CVE-2023-27332

TP-Link Archer AX21 tdpServer Logging Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of TP-Link Archer AX21 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the logging functionality of the tdpServer program, which listens on UDP port 20002. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. . Was ZDI-CAN-19898.

CVSS v3 8.8 HIGH

8.8^/10

CVSS v3 : HIGH

Vector : AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitability : 2.8 / Impact : 5.9

Attack Vector ADJACENT_NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://www.zerodayinitiative.com/advisories/ZDI-23-245/	Third Party Advisory
https://www.zerodayinitiative.com/advisories/ZDI-23-245/	Third Party Advisory

Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:tp-link:archer_ax21_firmware:1.1.3:build_20221125:*:*:*:*:*:*

cpe:2.3:h:tp-link:archer_ax21:-:*:*:*:*:*:*:*

History

06 Aug 2025, 14:24

Type	Values Removed	Values Added
First Time		Tp-link archer Ax21 Firmware Tp-link Tp-link archer Ax21
CPE		cpe:2.3:o:tp-link:archer_ax21_firmware:1.1.3:build_20221125:::::: cpe:2.3:h:tp-link:archer_ax21:-:::::::*
References	~~() https://www.zerodayinitiative.com/advisories/ZDI-23-245/ -~~	() https://www.zerodayinitiative.com/advisories/ZDI-23-245/ - Third Party Advisory

Information

Published : 2024-05-03 02:15

Updated : 2025-08-06 14:24

NVD link : CVE-2023-27332

Mitre link : CVE-2023-27332

CVE.ORG link : CVE-2023-27332

JSON object : View

Products Affected

tp-link

archer_ax21_firmware
archer_ax21

CWE

CWE-121

Stack-based Buffer Overflow

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