PT-2026-56925 · Mercusys · Mw302R

Published 2026-07-09 · Updated 2026-07-10 · CVE-2026-31267

Positive Technologies (AI Summary)

CVSS v3.1

5.7

Medium

Base vector

AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Mercusys MW302R version MW302R(EU) V1 1.4.10 Build 231023

Description A stack buffer overflow exists in the administrative web interface. This issue allows an authenticated attacker with administrative privileges to cause a system crash and a subsequent denial of service by sending a specially crafted request, which enables control flow manipulation to an arbitrary instruction address. A stack buffer overflow occurs when a program writes more data to a buffer located on the stack than the buffer is allocated to hold.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Stack Overflow

Weakness Enumeration

CWE-121

Related Identifiers

CVE-2026-31267

Affected Products

Mw302R

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2026-31267 · Security Note
• https://gist.github.com/BarrYPL/13dcd071673866cbbfaaa05085b98cf3 · Note
• https://twitter.com/vuldb/status/2075582713667760259 · Twitter Post
• https://barry-dev.xyz/about · Note