CVE-2026-78861
Mercusys AC12 V2 Hardcoded RSA Private Key Enables Local Arbitrary Code Execution
CVSS v3
7.7
HIGH
EPSS Score
—
exploit probability
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
An issue in Mercusys AC12 V2 allows a local attacker to execute arbitrary code via a hardcoded 512-bit RSA Private Key
Technical details
- CVSS v3 Vector
- CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
- Published
- 2026-10-05
- Last Modified
- 2026-10-06
Frequently asked questions
What is CVE-2026-78861?
An issue in Mercusys AC12 V2 allows a local attacker to execute arbitrary code via a hardcoded 512-bit RSA Private Key
Is CVE-2026-78861 actively exploited?
Active exploitation of CVE-2026-78861 has not been confirmed.
What is the CVSS score for CVE-2026-78861?
CVE-2026-78861 has a CVSS v3 base score of 7.7 (HIGH severity), with vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.
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