CVE-2026-12495: CWE-121 Stack-based buffer overflow in Mercusys MB115-4G
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.
CVE-2026-12495: CWE-121 Stack-based buffer overflow in Mercusys MB115-4G
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.
CVSS v4.0
Score 9.2critical
Affected software
Weaknesses
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- INCIBE
- Date Reserved
- 2026-06-17T08:53:55.157Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a673f8d9c2644c7f8f0f035
Added to database: 07/27/2026, 11:22:53 UTC
Last updated: 07/28/2026, 01:02:13 UTC
Views: 27
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