What is the CVSS score of CVE-2020-16263?

CVE-2020-16263 has a CVSS 3.1 base score of 9.1 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N. EPSS exploitation probability: 1.2%.

Is there a public PoC exploit available for CVE-2020-16263?

Yes, a public proof-of-concept exploit is available for CVE-2020-16263. Prioritise patching immediately. EPSS: 1.2%.

Winston Firmware CVE-2020-16263

CRITICAL

Exposure of Resource to Wrong Sphere (CWE-668)

2020-10-28 cve@mitre.org

Information Disclosure Winston Firmware

9.1

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

9.1 CRITICAL

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

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:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

None

Lifecycle Timeline

CVE Published

Oct 28, 2020 - 18:15 nvd

CRITICAL 9.1

DescriptionNVD

Winston 1.5.4 devices have a CORS configuration that trusts arbitrary origins. This allows requests to be made and viewed by arbitrary origins.

AnalysisAI

Winston 1.5.4 devices have a CORS configuration that trusts arbitrary origins. Rated critical severity (CVSS 9.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified as Exposure of Resource to Wrong Sphere (CWE-668), which allows attackers to access resources from an unintended security context. Winston 1.5.4 devices have a CORS configuration that trusts arbitrary origins. This allows requests to be made and viewed by arbitrary origins. Affected products include: Winstonprivacy Winston Firmware.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Implement proper access controls, validate resource access permissions, use security boundaries.