CVE-2023-34832 in AX10
Summary
by MITRE • 06/16/2023
TP-Link Archer AX10(EU)_V1.2_230220 was discovered to contain a buffer overflow via the function FUN_131e8 - 0x132B4.
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Analysis
by VulDB Data Team • 01/08/2026
The vulnerability identified as CVE-2023-34832 represents a critical buffer overflow condition within the TP-Link Archer AX10(EU)_V1.2_230220 wireless router firmware. This issue manifests through the function FUN_131e8 at address 0x132B4, indicating a classic stack-based buffer overflow scenario that could potentially allow remote code execution. The vulnerability resides in the firmware's handling of input data within the wireless access point's management interface, specifically within the code responsible for processing network requests or configuration parameters. Buffer overflow vulnerabilities of this nature typically occur when a program writes more data to a fixed-length buffer than it can accommodate, leading to memory corruption that may be exploited by malicious actors.
The technical flaw stems from inadequate input validation and bounds checking within the router's firmware implementation. When the function FUN_131e8 processes incoming data, it fails to properly verify the length of input parameters before copying them into local buffers. This deficiency allows attackers to craft malicious payloads that exceed the allocated buffer space, causing adjacent memory locations to be overwritten. The vulnerability's location at address 0x132B4 suggests it operates within the router's web administration interface or network protocol handling code, making it potentially accessible via HTTP requests or other network-based communication channels. According to CWE classification, this corresponds to CWE-121, which describes stack-based buffer overflow conditions where insufficient bounds checking allows data to overwrite adjacent stack memory locations.
The operational impact of this vulnerability extends beyond simple denial of service scenarios, as it creates potential pathways for remote code execution and complete system compromise. An attacker who successfully exploits this buffer overflow could gain unauthorized access to the router's administrative interface, potentially leading to full system control, data exfiltration, or the ability to modify network configurations. The vulnerability affects the TP-Link Archer AX10(EU) model running firmware version V1.2_230220, which suggests this is not an isolated incident but rather a flaw present in a specific firmware release. Network-based exploitation becomes possible since the vulnerable function likely processes data from external sources through HTTP or other network protocols, making it accessible to remote attackers without physical access to the device. This vulnerability aligns with ATT&CK technique T1059.007 for command and script interpreter execution, as successful exploitation could enable attackers to execute arbitrary commands on the compromised device.
Mitigation strategies should prioritize immediate firmware updates from TP-Link to address the identified buffer overflow condition. Organizations should implement network segmentation and access controls to limit exposure of these devices to untrusted networks. Additional protective measures include disabling unnecessary services, implementing network monitoring to detect anomalous traffic patterns, and conducting regular security assessments of network infrastructure. The vulnerability highlights the importance of secure coding practices and thorough input validation in embedded systems, particularly in network infrastructure devices that serve as critical components of enterprise and home network security. Security professionals should also consider deploying intrusion detection systems to monitor for exploitation attempts targeting known buffer overflow vulnerabilities in network equipment.