CVE-2025-62673 is a heap-based buffer overflow vulnerability classified under CWE-122, discovered in the TP-Link Archer AX53 v1.0 router's tdpserver modules. This vulnerability allows an adjacent attacker—meaning an attacker on the same local network segment—to send a specially crafted network packet containing a maliciously formed field that overflows a heap buffer. This overflow can cause a segmentation fault, leading to a denial of service, or potentially enable arbitrary code execution on the device. The vulnerability affects firmware versions through 1.3.1 Build 20241120. The CVSS 4.0 vector (AV:A/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N) indicates that the attack requires adjacent network access and low privileges but no user interaction, with high impact on confidentiality, integrity, and availability. The vulnerability does not currently have publicly available patches or known exploits in the wild, but the potential for exploitation is significant given the ability to execute arbitrary code. The tdpserver module likely handles network traffic or device management functions, making exploitation impactful for network security and device control. This vulnerability could be leveraged to compromise the router, intercept or manipulate network traffic, or pivot into internal networks.

For European organizations, this vulnerability poses a significant risk, especially those relying on TP-Link Archer AX53 routers for network connectivity. Successful exploitation could lead to full device compromise, allowing attackers to intercept sensitive communications, manipulate network traffic, or disrupt network availability. This is particularly critical for enterprises, government agencies, and critical infrastructure operators where network integrity and confidentiality are paramount. The vulnerability's requirement for adjacent network access means attackers need to be on the same local network segment, which could be achieved through compromised devices or insider threats. Given the widespread use of TP-Link devices in Europe, especially in small to medium enterprises and home office environments, the attack surface is considerable. The lack of patches increases the urgency for mitigation. Additionally, compromised routers could be used as footholds for further attacks within organizational networks, amplifying the impact.

Organizations should immediately inventory their network devices to identify any TP-Link Archer AX53 routers running vulnerable firmware versions. Until patches are released, network segmentation should be enforced to limit access to router management interfaces and isolate critical network segments from less trusted areas. Implement strict access controls and monitoring on local networks to detect anomalous packets or traffic patterns targeting the tdpserver module. Employ network intrusion detection systems (NIDS) with updated signatures to identify exploitation attempts. Disable unnecessary services or modules on the router if possible. Encourage users to avoid connecting untrusted devices to the same local network segment as the router. Once patches become available, prioritize timely firmware updates. Additionally, consider deploying endpoint detection and response (EDR) solutions to identify lateral movement attempts originating from compromised routers.