SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityAnalyzed

CVE-2016-0189

Microsoft Internet Explorer Memory Corruption Vulnerability

KEVHIGH 7.5EPSS 94.1%

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 Microsoft (1) JScript 5.8 and (2) VBScript 5.7 and 5.8 engines, as used in Internet Explorer 9 through 11 and other products, allow remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site, aka "Scripting Engine Memory Corruption Vulnerability," a different vulnerability than CVE-2016-0187.

CVSS 3.1
7.5 HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS
94.06% probability · 100th percentile
CISA KEV
Listed 28 March 2022 · due 18 April 2022 · used in ransomware campaigns
Weakness
CWE-787
Affected
microsoft/jscript · microsoft/vbscript · microsoft/internet explorer
Source
secure@microsoft.com

CISA notes

Apply updates per vendor instructions. https://nvd.nist.gov/vuln/detail/CVE-2016-0189

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