CVE-2026-31267
MediumCVSS 5.7Exploitation Probability (EPSS)
Low risk24th percentile - higher than 24% of all known CVEs
Summary
The Mercusys MW302R device running firmware version MW302R(EU)_V1_1.4.10 Build 231023 contains a buffer overflow vulnerability in the administrative web interface. An authenticated attacker with administrative privileges can send a specially crafted request, causing a system crash.
Risk Assessment
The vulnerability allows an authenticated attacker with administrative privileges to cause a denial of service (DoS) by manipulating control flow to an arbitrary instruction address, potentially disrupting device operation.
Recommendation
It is recommended to immediately update the firmware of the Mercusys MW302R device to the latest available version that fixes this vulnerability. If an update is not available, restrict access to the administrative interface to trusted networks only.
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Original NVD description (English source)
Mercusys MW302R MW302R(EU)_V1_1.4.10 Build 231023 is vulnerable to Buffer Overflow in the administrative web interface. A stack buffer overflow vulnerability in the administrative web interface allows an authenticated attacker with administrative privileges to trigger a system crash by sending a specially crafted request. The vulnerability results in denial of service through control flow manipulation to an arbitrary instruction address.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

