CVE-2018-0802: Microsoft Office Memory Corruption Vulnerability

CVE-2018-0802 · Severity: critical · CVSS 7.8 · Exploited in the wild · Published 2021-11-03

Equation Editor in Microsoft Office contains a memory corruption vulnerability due to improper object handling in memory. A remote attacker can exploit this by convincing a user to open a specially crafted file, resulting in remote code execution in the context of the current user.

Technologies: Microsoft Office. Vendors: Microsoft.

Quick answers

Is CVE-2018-0802 exploited in the wild?
Yes. CVE-2018-0802 is known to be exploited in the wild, first recorded on 3 November 2021. Treat it as urgent.
How severe is CVE-2018-0802?
Critical severity, with a CVSS score of 7.8, published 3 November 2021.
Which products and versions are affected?
Microsoft Office 2007 Service Pack 3; Microsoft Office 2010 Service Pack 2; Microsoft Office 2013 Service Pack 1; Microsoft Office 2016; and 5 more.
Is there a fix for CVE-2018-0802?
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-2018-0802 attacked?
It is attacked with local access, in a network appliance.
Am I affected by CVE-2018-0802?
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 2007 Service Pack 3
  • Microsoft Office 2010 Service Pack 2
  • Microsoft Office 2013 Service Pack 1
  • Microsoft Office 2016
  • Microsoft Word 2007 Service Pack 3
  • Microsoft Word 2010 Service Pack 2
  • Microsoft Word 2013 Service Pack 1
  • Microsoft Word 2016
  • Microsoft Office Compatibility Pack Service Pack 3

Timeline

  • 2018-01-09: disclosed: Initial Microsoft advisory publication date based on CVE ID and external references.
  • 2021-11-03: kev added: Added to CISA's Known Exploited Vulnerabilities Catalog.
  • 2021-11-03: exploited: Confirmed as exploited in the wild.

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