CVE-2023-36563: Microsoft WordPad Information Disclosure Vulnerability

CVE-2023-36563 · Severity: critical · CVSS 6.5 · Exploited in the wild · Published 2023-10-10

Microsoft WordPad contains an information disclosure vulnerability that can lead to the leakage of NTLM hashes. An attacker can exploit this by inducing a user to open a specially crafted file, potentially leading to further credential-based attacks.

Vendors: Microsoft.

Quick answers

Is CVE-2023-36563 exploited in the wild?
Yes. CVE-2023-36563 is known to be exploited in the wild, first recorded on 10 October 2023. Treat it as urgent.
How severe is CVE-2023-36563?
Critical severity, with a CVSS score of 6.5, published 10 October 2023.
Which products and versions are affected?
Microsoft Windows 10 1507, 1607, 1809, 21H2, 22H2; Microsoft Windows 11 21H2, 22H2; Microsoft Windows Server 2008, 2008 R2, 2012, 2012 R2, 2016, 2019, 2022; Microsoft WordPad.
Is there a fix for CVE-2023-36563?
A patch was published on 2023-10-10. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2023-36563 attacked?
It is attacked over the network or with local access, in an operating system.
Am I affected by CVE-2023-36563?
Check whether you run Microsoft WordPad. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Affected products

  • Microsoft Windows 10 1507, 1607, 1809, 21H2, 22H2
  • Microsoft Windows 11 21H2, 22H2
  • Microsoft Windows Server 2008, 2008 R2, 2012, 2012 R2, 2016, 2019, 2022
  • Microsoft WordPad

Timeline

  • 2023-10-10: disclosed
  • 2023-10-10: patched
  • 2023-10-10: kev added: Added to CISA Known Exploited Vulnerabilities Catalog
  • 2023-10-10: exploited: Reported as exploited in the wild at time of publication.

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