CVE-2026-12495CWE-121

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

Medium · published July 27, 2026

CVSS v4.0
5.3
EPSS
0%
Percentile
15.5
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
5.3 · MEDIUM
Vector
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
EPSS
0.00251 · 15.5th percentile
Weakness
CWE-121 · Stack-based Buffer Overflow
Published
2026-07-27T10:32Z
EPSS history
Timeline
  • 27 JUL 10:32Z
    Stack-Based Buffer Overflow in the Mercusys MB115-4G
    cvelistv5