CVE-2026-78861: n/a
Description
A vulnerability in Mercusys AC12 V2 allows a local attacker to execute arbitrary code by leveraging a hardcoded 512-bit RSA private key. This issue enables unauthorized code execution on the affected device. No patch or remediation information is currently available.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-78861 describes a security flaw in the Mercusys AC12 V2 router where a hardcoded 512-bit RSA private key is embedded in the device. This key can be exploited by a local attacker to execute arbitrary code on the device, potentially compromising its integrity and security. The vulnerability is specific to the Mercusys AC12 V2 model. No CVSS score or detailed technical exploit information is provided. There is no information about available patches or vendor advisories.
Potential Impact
The vulnerability allows a local attacker to execute arbitrary code on the affected device, which could lead to full compromise of the device's functionality and security. This could enable unauthorized access, control, or manipulation of the device and its network traffic. The use of a hardcoded private key significantly weakens the device's cryptographic security.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict local access to the device to trusted users only and monitor for unusual activity.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mitre
- Date Reserved
- 2026-08-25T00:00:00.000Z
- State
- PUBLISHED
Threat ID: 6ac4063a2cdf04f65634e094
Added to database: 10/05/2026, 20:19:06 UTC
Last enriched: 10/05/2026, 20:33:21 UTC
Last updated: 10/05/2026, 20:34:04 UTC
Views: 3
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