SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityAnalyzed

CVE-2016-0151

Microsoft Windows CSRSS Security Feature Bypass Vulnerability

KEVHIGH 7.8EPSS 63.2%

Does this matter?

Known to be exploited in the wild (CISA KEV, CISA remediation deadline 18 April 2022). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.

Description

The Client-Server Run-time Subsystem (CSRSS) in Microsoft Windows 8.1, Windows Server 2012 Gold and R2, Windows RT 8.1, and Windows 10 Gold and 1511 mismanages process tokens, which allows local users to gain privileges via a crafted application, aka "Windows CSRSS Security Feature Bypass Vulnerability."

CVSS 3.1
7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS
63.20% probability · 99th percentile
CISA KEV
Listed 28 March 2022 · due 18 April 2022 · used in ransomware campaigns
Weakness
CWE-269
Affected
microsoft/windows 10 1507 · microsoft/windows 10 1511 · microsoft/windows 8.1 · microsoft/windows rt 8.1 · microsoft/windows server 2012
Source
secure@microsoft.com

CISA notes

Apply updates per vendor instructions. https://nvd.nist.gov/vuln/detail/CVE-2016-0151

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.