What is the CVSS score of CVE-2022-46399?

CVE-2022-46399 has a CVSS 3.1 base score of 7.5 (High). CVSS vector: CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.7%.

Is there a public PoC exploit available for CVE-2022-46399?

Yes, a public proof-of-concept exploit is available for CVE-2022-46399. Prioritise patching immediately. EPSS: 0.7%.

Bm78 Firmware CVE-2022-46399

HIGH

Uncontrolled Resource Consumption (CWE-400)

2022-12-19 cve@mitre.org

Denial Of Service Bm78 Firmware Bm83 Firmware Rn4870 Firmware Rn4871 Firmware Bm70 Firmware Bm71 Firmware Pic Lightblue Explorer Demo Firmware Bm64 Firmware Bm77 Firmware Is1870 Firmware Is1871 Firmware Rn4678 Firmware Pic32Cx1012Bz25048 Firmware Wbz451 Firmware

7.5

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.5 HIGH

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Adjacent

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

CVE Published

Dec 19, 2022 - 23:15 nvd

HIGH 7.5

DescriptionNVD

The Microchip RN4870 module firmware 1.43 (and the Microchip PIC LightBlue Explorer Demo 4.2 DT100112) is unresponsive with ConReqTimeoutZero.

AnalysisAI

The Microchip RN4870 module firmware 1.43 (and the Microchip PIC LightBlue Explorer Demo 4.2 DT100112) is unresponsive with ConReqTimeoutZero. Rated high severity (CVSS 7.5), this vulnerability is no authentication required. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified as Uncontrolled Resource Consumption (CWE-400), which allows attackers to cause denial of service by exhausting system resources. The Microchip RN4870 module firmware 1.43 (and the Microchip PIC LightBlue Explorer Demo 4.2 DT100112) is unresponsive with ConReqTimeoutZero. 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 rate limiting, set resource quotas, validate input sizes, use timeouts.