What is the CVSS score of CVE-2019-18671?

CVE-2019-18671 has a CVSS 3.1 base score of 9.8 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 3.3%.

Is there a patch available for CVE-2019-18671?

Yes, a patch is available for CVE-2019-18671. Update the affected software to the latest version immediately.

Keepkey Firmware CVE-2019-18671

CRITICAL

Out-of-bounds Write (CWE-787)

2019-12-06 cve@mitre.org

Buffer Overflow RCE Memory Corruption Keepkey Firmware

9.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

9.8 CRITICAL

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

CVE Published

Dec 06, 2019 - 18:15 nvd

CRITICAL 9.8

DescriptionNVD

Insufficient checks in the USB packet handling of the ShapeShift KeepKey hardware wallet before firmware 6.2.2 allow out-of-bounds writes in the .bss segment via crafted messages. The vulnerability could allow code execution or other forms of impact. It can be triggered by unauthenticated attackers and the interface is reachable via WebUSB.

AnalysisAI

Insufficient checks in the USB packet handling of the ShapeShift KeepKey hardware wallet before firmware 6.2.2 allow out-of-bounds writes in the .bss segment via crafted messages. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity.

Technical ContextAI

This vulnerability is classified as Out-of-bounds Write (CWE-787), which allows attackers to write data beyond allocated buffer boundaries leading to code execution or crashes. Insufficient checks in the USB packet handling of the ShapeShift KeepKey hardware wallet before firmware 6.2.2 allow out-of-bounds writes in the .bss segment via crafted messages. The vulnerability could allow code execution or other forms of impact. It can be triggered by unauthenticated attackers and the interface is reachable via WebUSB. Affected products include: Keepkey Keepkey Firmware.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Validate write boundaries, use memory-safe languages, enable compiler protections (ASLR, stack canaries).