CVE-2026-78862
An issue in Mercusys AC12 V2 allows a local attacker to execute arbitrary code via the UART serial interface on the printed circuit board (P
CVSS
6.8
Medio
EPSS
0.2%
p7
KEV
—
Exploit Today
2
0-100
Publicado: 5 oct 2026 · Última mod.: 6 oct 2026 · CWE-1299
0.2%EPSS · 30 días0.2%
2026-10-062026-10-21
An issue in Mercusys AC12 V2 allows a local attacker to execute arbitrary code via the UART serial interface on the printed circuit board (PCB)
- ac12.comhttp://ac12.com
- mercusys.comhttp://mercusys.com
- threadpoolx.gitbook.iohttps://threadpoolx.gitbook.io/docs/cve/mercusys-ac12-v2-security-advisory/unprotected-physical-debug-interface-uart
- threadpoolx.gitbook.iohttps://threadpoolx.gitbook.io/docs/cve/mercusys-ac12-v2-security-advisory/unprotected-physical-debug-interface-uart
CVECVSSEPSSKEVRExplotTítuloVis.
CVE-2025-359987.9 ALT6.2%
——2Missing protection mechanism for alternate hardware interface in the Intel(R) Quick Assist Technology for some Intel(R) Platforms within Ring 0: Kernel may allow an escalation of privilege. System software adversary with a privileged user combined with a low complexity attack may enable escalation of privilege. This result may potentially occur via local access when attack requirements are present with special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (high), integrity (high) and availability (none) of the vulnerable system, resulting in subsequent system confidentiality (none), integrity (none) and availability (none) impacts.100dCVE-2025-416976.8 MED13.6%
——4An attacker can use an undocumented UART port on the PCB as a side-channel to get root access e.g. with the credentials obtained from CVE-2025-41692.16d