SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityAnalyzed

CVE-2023-36563

Microsoft WordPad Information Disclosure Vulnerability

KEVMEDIUM 5.5EPSS 20.7%

Does this matter?

Known to be exploited in the wild (CISA KEV, CISA remediation deadline 31 October 2023). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.

Description

Microsoft WordPad Information Disclosure Vulnerability

CVSS 3.1
5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
EPSS
20.72% probability · 97th percentile
CISA KEV
Listed 10 October 2023 · due 31 October 2023
Weakness
CWE-20
Affected
microsoft/windows 10 1507 · microsoft/windows 10 1607 · microsoft/windows 10 1809 · microsoft/windows 10 21h2 · microsoft/windows 10 22h2 · microsoft/windows 11 21h2 · microsoft/windows 11 22h2 · microsoft/windows server 2008 · microsoft/windows server 2012 · microsoft/windows server 2016 · microsoft/windows server 2019 · microsoft/windows server 2022
Source
secure@microsoft.com

CISA notes

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2023-36563; https://nvd.nist.gov/vuln/detail/CVE-2023-36563

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