CVE-2020-27950
Published: November 3, 2021
Official Description
Apple iOS, iPadOS, macOS, and watchOS contain a memory initialization vulnerability that may allow a malicious application to disclose kernel memory.
CISA KEV Advisory
Apple Multiple Products Memory Initialization Vulnerability
Apple iOS, iPadOS, macOS, and watchOS contain a memory initialization vulnerability that may allow a malicious application to disclose kernel memory.
Apply updates per vendor instructions.
Risk Analysis
A memory initialization vulnerability in Apple iOS, iPadOS, macOS, and watchOS could allow a malicious application to disclose kernel memory. With a high EPSS score of 0.46234 and its inclusion in CISA's KEV, this vulnerability is actively exploited and poses a significant risk of sensitive information disclosure.
This vulnerability is actively exploited in the wild and is included in CISA's Known Exploited Vulnerabilities Catalog.
Apply the latest security updates for Apple iOS, iPadOS, macOS, and watchOS to address the memory initialization vulnerability. Ensure all Apple devices are kept up-to-date with security patches.
Technical Analysis
CVE-2020-27950 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-2020-27950 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-2020-27950 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