CVE-2026-12495 — Stack-Based Buffer Overflow in the Mercusys MB115-4G

CVE-2026-12495

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

Description (CNA)

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.

Affected (CNA)

Vendor / product	Versions
Mercusys / MB115-4G	affected 1.7.0 through 1.9.0

CWE

CWE-121

References

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

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.