Is CVE-2023-0266 actively exploited?

Yes. CVE-2023-0266 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, which means exploitation in the wild has been confirmed.

Can CVE-2023-0266 be exploited remotely?

The attack vector of CVE-2023-0266 has not been classified yet.

What is the CVSS score of CVE-2023-0266?

CVE-2023-0266 has not received a CVSS score yet.

HOME VULNERABILITIESCVE-2023-0266

HIGHCISA KEVIN THE WILD

CVE-2023-0266

Published: March 30, 2023

EPSS:0.08%probability of exploitation in 30 daysPercentile:24.3th

Official Description

Linux kernel contains a use-after-free vulnerability that allows for privilege escalation to gain ring0 access from the system user.

NVD Source

CISA KEV Advisory

Linux Kernel Use-After-Free Vulnerability

Linux kernel contains a use-after-free vulnerability that allows for privilege escalation to gain ring0 access from the system user.

Added to KEV: 2023-03-30Federal patch deadline: 2023-04-20

Required Action (CISA)

Apply updates per vendor instructions.

Technical Analysis

CVE-2023-0266 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

CISA has added CVE-2023-0266 to the Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. U.S. federal agencies are required to patch this within the mandated timeframe, and all organizations should treat remediation as urgent.