CVE-2017-11882
Published: November 3, 2021
Official Description
Microsoft Office contains a memory corruption vulnerability that allows remote code execution in the context of the current user.
CISA KEV Advisory
Microsoft Office Memory Corruption Vulnerability
Microsoft Office contains a memory corruption vulnerability that allows remote code execution in the context of the current user.
Apply updates per vendor instructions.
Risk Analysis
Microsoft Office contains a memory corruption vulnerability that can lead to remote code execution in the context of the current user. The high EPSS score of 0.94384 indicates a very high probability of this vulnerability being exploited, making it a significant risk.
This vulnerability is actively being exploited in the wild and is part of CISA's KEV catalog, confirming its use by attackers. The nature of the flaw suggests it can be exploited remotely, likely through malicious documents.
Users should apply all available security updates for Microsoft Office to address this memory corruption vulnerability. Implement robust email and document security practices to prevent the delivery of malicious files.
Technical Analysis
CVE-2017-11882 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-2017-11882 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-2017-11882 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