CVE-2020-1464
Published: November 3, 2021
Official Description
Microsoft Windows contains a spoofing vulnerability when Windows incorrectly validates file signatures, allowing an attacker to bypass security features and load improperly signed files.
CISA KEV Advisory
Microsoft Windows Spoofing Vulnerability
Microsoft Windows contains a spoofing vulnerability when Windows incorrectly validates file signatures, allowing an attacker to bypass security features and load improperly signed files.
Apply updates per vendor instructions.
Risk Analysis
This high-severity spoofing vulnerability in Microsoft Windows allows attackers to bypass security features by tricking the system into loading improperly signed files. The high EPSS score of 0.12638 suggests a considerable probability of this flaw being exploited, warranting immediate attention.
This vulnerability is actively being exploited in the wild and is included in CISA's KEV catalog, indicating confirmed exploitation.
Apply the latest security updates for Microsoft Windows to correct the file signature validation issue and prevent spoofing attacks.
Technical Analysis
CVE-2020-1464 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-2020-1464 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-2020-1464 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