CVE-2025-61983
Published: 03 February 2026
Summary
CVE-2025-61983 is a high-severity Heap-based Buffer Overflow (CWE-122) vulnerability in Tp-Link Archer Ax53 Firmware. Its CVSS base score is 8.0 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation of Remote Services (T1210); ranked at the 1.2th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-2 (Flaw Remediation).
Threat & Defense at a Glance
Threat & Defense Details
Mitigating Controls (NIST 800-53 r5)AI
Applying vendor-provided firmware updates directly remediates the heap-based buffer overflow in the tmpserver modules.
Validating the structure, number, and lengths of fields in incoming network packets prevents the buffer overflow triggered by excessive zero-length values.
Implementing heap memory protections such as guard pages and integrity checks mitigates exploitation of the heap buffer overflow for arbitrary code execution.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Heap buffer overflow in router network service (tmpserver) directly enables remote exploitation for code execution on an adjacent authenticated network service.
NVD Description
Heap-based Buffer Overflow vulnerability in TP-Link Archer AX53 v1.0 (tmpserver modules) allows authenticated adjacent attackers to cause a segmentation fault or potentially execute arbitrary code via a specially crafted network packet containing an excessive number of fields with zero‑length values.This…
more
issue affects Archer AX53 v1.0: through 1.3.1 Build 20241120.
Deeper analysisAI
CVE-2025-61983 is a heap-based buffer overflow vulnerability (CWE-122) in the tmpserver modules of the TP-Link Archer AX53 v1.0 router. It affects versions through 1.3.1 Build 20241120. The flaw arises when processing a specially crafted network packet containing an excessive number of fields with zero-length values, leading to improper memory handling.
Authenticated adjacent attackers can exploit this vulnerability with low complexity and no user interaction required. By sending the malicious packet over the local network (AV:A, PR:L), they can trigger a segmentation fault or potentially achieve arbitrary code execution, granting high confidentiality, integrity, and availability impacts (CVSS 8.0).
Mitigation details are available in the Talos Intelligence advisory (TALOS-2025-2286) and TP-Link support resources. Firmware updates for Archer AX53 v1.0 are provided on TP-Link's download pages for various regions, including US and Malaysia, along with a relevant FAQ at tp-link.com/us/support/faq/4943. Security practitioners should apply these patches promptly to vulnerable devices.
Details
- CWE(s)