Actively exploited · Published Oct 10, 2023 · Assigned by microsoft

CVE-2023-36563Microsoft WordPad Information Disclosure Vulnerability

Medium 6.5 Exploited

In plain English

A medium-severity improper input validation in Windows 10 Version 1507 from Microsoft. Attackers are actively exploiting it in the wild (listed by CISA on October 10, 2023). The chance it is exploited in the next 30 days is estimated at 20.3% (higher than 97% of all known vulnerabilities). Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)20.3%top 2.5% of all CVEs
Exploited in the wildYesCISA KEV since Oct 10, 2023
Attack toolingNoneno public tooling known

CISA guidance

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Federal agencies must remediate by Oct 31, 2023.

Official description

Microsoft WordPad Information Disclosure Vulnerability

Affected products (as reported)

VendorProductVersions
Microsoft Windows 10 Version 1809 10.0.17763.0 – before 10.0.17763.4974
Microsoft Windows 10 Version 1809 10.0.0 – before 10.0.17763.4974
Microsoft Windows Server 2019 10.0.17763.0 – before 10.0.17763.4974
Microsoft Windows Server 2019 (Server Core installation) 10.0.17763.0 – before 10.0.17763.4974
Microsoft Windows Server 2022 10.0.20348.0 – before 10.0.20348.2031
Microsoft Windows 11 version 21H2 10.0.0 – before 10.0.22000.2538
Microsoft Windows 10 Version 21H2 10.0.19043.0 – before 10.0.19041.3570
Microsoft Windows 11 version 22H2 10.0.22621.0 – before 10.0.22621.2428
Microsoft Windows 10 Version 22H2 10.0.19045.0 – before 10.0.19045.3570
Microsoft Windows 10 Version 1507 10.0.10240.0 – before 10.0.10240.20232
Microsoft Windows 10 Version 1607 10.0.14393.0 – before 10.0.14393.6351
Microsoft Windows Server 2016 10.0.14393.0 – before 10.0.14393.6351
Microsoft Windows Server 2016 (Server Core installation) 10.0.14393.0 – before 10.0.14393.6351
Microsoft Windows Server 2008 Service Pack 2 6.0.6003.0 – before 6.0.6003.22317
Microsoft Windows Server 2008 Service Pack 2 (Server Core installation) 6.0.6003.0 – before 6.0.6003.22317
Microsoft Windows Server 2008 Service Pack 2 6.0.6003.0 – before 6.0.6003.22317
Microsoft Windows Server 2008 R2 Service Pack 1 6.1.7601.0 – before 6.1.7601.26769
Microsoft Windows Server 2008 R2 Service Pack 1 (Server Core installation) 6.1.7601.0 – before 6.1.7601.26769
Microsoft Windows Server 2012 6.2.9200.0 – before 6.2.9200.24523
Microsoft Windows Server 2012 (Server Core installation) 6.2.9200.0 – before 6.2.9200.24523
Microsoft Windows Server 2012 R2 6.3.9600.0 – before 6.3.9600.21620
Microsoft Windows Server 2012 R2 (Server Core installation) 6.3.9600.0 – before 6.3.9600.21620

Weakness: CWE-20 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C

References