What is the CVSS score of CVE-2022-46400?

CVE-2022-46400 has a CVSS 3.1 base score of 5.4 (Medium). CVSS vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L. EPSS exploitation probability: 0.6%.

Is there a public PoC exploit available for CVE-2022-46400?

Yes, a public proof-of-concept exploit is available for CVE-2022-46400. Prioritise patching immediately. EPSS: 0.6%.

Bm78 Firmware CVE-2022-46400

MEDIUM

Improper Authentication (CWE-287)

2022-12-19 cve@mitre.org

Authentication Bypass Bm78 Firmware Bm83 Firmware Rn4870 Firmware Rn4871 Firmware Bm70 Firmware Bm71 Firmware Pic Lightblue Explorer Demo Firmware Is1870 Firmware Is1871 Firmware

5.4

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

5.4 MEDIUM

AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

Attack Vector

Adjacent

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

Low

Lifecycle Timeline

CVE Published

Dec 19, 2022 - 23:15 nvd

MEDIUM 5.4

DescriptionNVD

The Microchip RN4870 module firmware 1.43 (and the Microchip PIC LightBlue Explorer Demo 4.2 DT100112) allows attackers to bypass passkey entry in legacy pairing.

AnalysisAI

The Microchip RN4870 module firmware 1.43 (and the Microchip PIC LightBlue Explorer Demo 4.2 DT100112) allows attackers to bypass passkey entry in legacy pairing. Rated medium severity (CVSS 5.4), this vulnerability is no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified as Improper Authentication (CWE-287), which allows attackers to bypass authentication mechanisms to gain unauthorized access. The Microchip RN4870 module firmware 1.43 (and the Microchip PIC LightBlue Explorer Demo 4.2 DT100112) allows attackers to bypass passkey entry in legacy pairing. Affected products include: Microchip Bm78 Firmware, Microchip Bm83 Firmware, Microchip Rn4870 Firmware, Microchip Rn4871 Firmware, Microchip Bm70 Firmware.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Implement multi-factor authentication, enforce strong password policies, use proven authentication frameworks.