CVE-2026-12495

MEDIUM

Stack-Based Buffer Overflow in the Mercusys MB115-4G

Title source: cna
STIX 2.1

Description

Denial-of-service (DoS) vulnerability due to a stack buffer overflow in the http_gdpr_decrypt function of the Mercusys MB115-4G device's web interface. An unauthenticated attacker could exploit this vulnerability by sending a specially crafted request to the /cgi/login endpoint, causing memory corruption and the httpd process to crash, resulting in a denial of service for the web administration service.

References (1)

Core 1

Scores

CVSS v4 5.3
EPSS 0.0016
EPSS Percentile 5.9%
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-121
Status published
Products (1)
Mercusys/MB115-4G 1.7.0 - 1.9.0
Published Jul 27, 2026
Tracked Since Jul 27, 2026