CVE-2026-12495

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.

Score

CVSS 4.0 5.3 Medium

Status

Deferred - cve-coordination@incibe.es

Published

2026-07-27

Last modified

2026-10-24

Weaknesses

CWE-121

Affected products

• Mb115-4g (Mercusys)

References

• https://www.incibe.es/en/incibe-cert/notices/aviso/stack-based-buffer-overflow-mercusys-mb115-4g