Microsoft · Office
CVE-2018-0798
Microsoft Office Memory Corruption Vulnerability
What it is
Equation Editor in Microsoft Office 2007, Microsoft Office 2010, Microsoft Office 2013, and Microsoft Office 2016 allows a remote code execution vulnerability due to the way objects are handled in memory, aka "Microsoft Office Memory Corruption Vulnerability".
CISA: Microsoft Office contains a memory corruption vulnerability due to the way objects are handled in memory. Successful exploitation allows for remote code execution in the context of the current user. This vulnerability is known to be chained with CVE-2018-0802.
What to do
Apply updates per vendor instructions.
Deadline for US federal agencies: May 3, 2022
More exploited flaws from Microsoft
| Added | Vulnerability | Product | Severity | Attack chance |
|---|---|---|---|---|
| Apr 14, 2026 | Remote Code Execution | Office | High 8.8 | 43% |
| Feb 10, 2026 | Word Reliance on Untrusted Inputs in a Security Decision | Office | High 7.8 | 1.6% |
| Jan 26, 2026 | Security Feature Bypass | Office | High 7.8 | 71% |
| Jan 7, 2026 | PowerPoint Code Injection | Office | High 8.8 | 67% |
| Aug 12, 2025 | Excel Remote Code Execution | Office | High 8.8 | 43% |
| Mar 14, 2023 | Outlook Privilege Escalation | Office | Critical 9.8 | 97% |
| Feb 14, 2023 | Publisher Security Feature Bypass | Office | High 7.3 | 12% |
| Jun 8, 2022 | Object Record Corruption | Office | High 7.8 | 53% |
Sources: Known Exploited Vulnerabilities (CISA, public domain), CVE records (cve.org) and EPSS (FIRST). The chance of attacks is the EPSS estimate that someone will try to exploit the flaw in the next 30 days.