SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityAnalyzed

CVE-2014-0322

Microsoft Internet Explorer Use-After-Free Vulnerability

KEVHIGH 8.8EPSS 85.2%

Does this matter?

Known to be exploited in the wild (CISA KEV, CISA remediation deadline 25 May 2022). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.

Description

Use-after-free vulnerability in Microsoft Internet Explorer 9 and 10 allows remote attackers to execute arbitrary code via vectors involving crafted JavaScript code, CMarkup, and the onpropertychange attribute of a script element, as exploited in the wild in January and February 2014.

CVSS 3.1
8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS
85.17% probability · 100th percentile
CISA KEV
Listed 4 May 2022 · due 25 May 2022
Weakness
CWE-416
Affected
microsoft/internet explorer
Source
secure@microsoft.com

CISA notes

Apply updates per vendor instructions. https://nvd.nist.gov/vuln/detail/CVE-2014-0322

References

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