CVE-2021-27059: Microsoft Office Remote Code Execution Vulnerability

CVE-2021-27059 · Severity: critical · CVSS 7.6 · Exploited in the wild · Published 2021-11-03

Microsoft Office contains an unspecified vulnerability that allows for remote code execution. The flaw requires high privileges and user interaction, but can lead to a full compromise of confidentiality, integrity, and availability.

Technologies: Microsoft Office. Vendors: Microsoft.

Quick answers

Is CVE-2021-27059 exploited in the wild?
Yes. CVE-2021-27059 is known to be exploited in the wild, first recorded on 3 November 2021. Treat it as urgent.
How severe is CVE-2021-27059?
Critical severity, with a CVSS score of 7.6, published 3 November 2021.
Which products and versions are affected?
Microsoft Office 2010 Service Pack 2; Microsoft Office 2013 Service Pack 1; Microsoft Office 2016 All versions.
Is there a fix for CVE-2021-27059?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2021-27059 attacked?
It is attacked over the network or with local access, in a network appliance.
Am I affected by CVE-2021-27059?
Check whether you run Microsoft Office. 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 Office 2010 Service Pack 2
  • Microsoft Office 2013 Service Pack 1
  • Microsoft Office 2016 All versions

Timeline

  • 2021-03-11: disclosed: NVD Published Date
  • 2021-11-03: kev added: Added to CISA Known Exploited Vulnerabilities Catalog
  • 2021-11-03: exploited: Reported as exploited in the wild per CISA KEV entry date.

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