CVE-2018-0798: Microsoft Office Memory Corruption Vulnerability
CVE-2018-0798 · Severity: critical · CVSS 8.8 · 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 to execute arbitrary code in the context of the current user, often by chaining it with other vulnerabilities like CVE-2018-0802.
Yes. CVE-2018-0798 is known to be exploited in the wild, first recorded on 3 November 2021. Treat it as urgent.
How severe is CVE-2018-0798?
Critical severity, with a CVSS score of 8.8, 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 4 more.
Is there a fix for CVE-2018-0798?
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-2018-0798 attacked?
It is attacked over the network, in a network appliance.
Am I affected by CVE-2018-0798?
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
Timeline
2018-01-09: disclosed: Initial advisory and third-party analysis published.
2021-11-03: kev added: Added to CISA Known Exploited Vulnerabilities Catalog.
2021-11-03: exploited: Confirmed as exploited in the wild.