CVE-2026-12495
Stack-Based Buffer Overflow in the Mercusys MB115-4G
- State
- Published
- Severity
- 5.3 Medium
- Published
- Jul 27, 2026
- Updated
- Jul 28, 2026
- Reserved
- Jun 17, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 5.3 Medium | 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 | INCIBE |
Weaknesses
- CWE-121 Stack-based buffer overflow
Affected Products
| Product | Versions |
|---|---|
MB115-4GMercusys |
|
References
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