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    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.

    Published:May 3, 2024
    Last Modified:Aug 6, 2025
    EPS:May 3, 2024
    EPSS Score:0.00681
    CVSS Score:8.8

    Affected Products

    Vendor
    Tp-link
    Product
    Archer Ax21
    Vendor
    Tp-link
    Product
    Archer Ax21 Firmware

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-121 Stack-based Buffer Overflow

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2023-28760 (CVSS 7.5) — TP-Link AX1800 WiFi 6 Router (Archer AX21) devices allow unauthenticated attackers (on the LAN) to execute arb…
    CVE-2023-27359 (CVSS 8.1) — TP-Link AX1800 hotplugd Firewall Rule Race Condition Vulnerability. This vulnerability allows remote attackers…
    CVE-2023-27346 (CVSS 8.8) — TP-Link AX1800 Firmware Parsing Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerab…
    CVE-2023-27333 (CVSS 6.8) — TP-Link Archer AX21 tmpServer Command 0x422 Stack-based Buffer Overflow Remote Code Execution Vulnerability. T…
    CVE-2023-31710 (CVSS 9.8) — TP-Link Archer AX21(US)_V3_1.1.4 Build 20230219 and AX21(US)_V3.6_1.1.4 Build 20230219 are vulnerable to Buffe…
    CVE-2023-1389 (CVSS 8.8) — TP-Link Archer AX21 (AX1800) firmware versions before 1.1.4 Build 20230219 contained a command injection vulne…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High