CVE-2015-1770
Published: March 28, 2022
Official Description
Microsoft Office allows remote attackers to execute arbitrary code via a crafted Office document.
CISA KEV Advisory
Microsoft Office Uninitialized Memory Use Vulnerability
Microsoft Office allows remote attackers to execute arbitrary code via a crafted Office document.
Apply updates per vendor instructions.
Risk Analysis
This vulnerability in Microsoft Office allows remote attackers to execute arbitrary code through a specially crafted Office document. Its high EPSS score of 0.78193 and inclusion in CISA's KEV indicate a high likelihood of exploitation and a significant risk to affected systems.
Active exploitation of this vulnerability has been observed in the wild, confirming its critical nature. The flaw is remotely exploitable, typically requiring user interaction to open a malicious document.
Users should ensure all Microsoft Office installations are fully patched with the latest security updates. Implement strong email filtering and user awareness training to prevent the opening of suspicious documents.
Technical Analysis
CVE-2015-1770 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-2015-1770 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-2015-1770 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