CVE-2018-0802
Published: November 3, 2021
Official Description
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-2018-0798.
CISA KEV Advisory
Microsoft Office Memory Corruption Vulnerability
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-2018-0798.
Apply updates per vendor instructions.
Risk Analysis
Microsoft Office contains a memory corruption vulnerability that allows remote code execution in the context of the current user when objects are handled improperly. With an EPSS score of 0.93888, the likelihood of exploitation is very high, and its inclusion in CISA's KEV confirms active exploitation, making this a critical issue.
This vulnerability is actively being exploited in the wild, as indicated by its 'in_the_wild' exploit status and presence in CISA's KEV. It is known to be chained with other vulnerabilities for successful exploitation.
Users should ensure Microsoft Office installations are fully updated with the latest security patches. Employing robust endpoint detection and response solutions can help detect and prevent exploitation attempts.
Technical Analysis
CVE-2018-0802 requires local access, meaning attackers must already have a foothold on the target system.
Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
CISA has added CVE-2018-0802 to the Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. U.S. federal agencies are required to patch this within the mandated timeframe, and all organizations should treat remediation as urgent.
Affected Vendors & Products
Exploit & PoC Resources
All References (1)
Quick Facts
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2018-0802 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
- !CISA KEV: Federal agencies must patch per BOD 22-01 timeline
- !Active exploitation confirmed — treat as P1