Is CVE-2023-4280 actively exploited?

No active exploitation of CVE-2023-4280 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2023-4280 be exploited remotely?

Yes. CVE-2023-4280 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2023-4280?

CVE-2023-4280 has a CVSS score of 9.8 (CRITICAL).

HOME VULNERABILITIESCVE-2023-4280

CRITICAL

CVE-2023-4280

CWE-125Published: January 2, 2024· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

An unvalidated input in Silicon Labs TrustZone implementation in v4.3.x and earlier of the Gecko SDK allows an attacker to access the trusted region of memory from the untrusted region.

NVD Source

Risk Analysis

This vulnerability in the Silicon Labs Gecko SDK allows an attacker to bypass memory isolation between trusted and untrusted regions. Given the critical CVSS score of 9.8, this flaw poses a significant risk to system integrity and confidentiality.

There is no known public exploit for this vulnerability, and it is not currently listed in CISA's KEV catalog. The vulnerability is remotely exploitable with low attack complexity.

Recommended Action

Users should update to a version of the Gecko SDK beyond 4.3.x to resolve the input validation issue.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2023-4280 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.