CVE-2021-1048
Published: May 23, 2022
Official Description
Android kernel contains a use-after-free vulnerability that allows for privilege escalation.
CISA KEV Advisory
Android Kernel Use-After-Free Vulnerability
Android kernel contains a use-after-free vulnerability that allows for privilege escalation.
Apply updates per vendor instructions.
Risk Analysis
This high-severity use-after-free vulnerability in the Android kernel allows for privilege escalation. Its inclusion in CISA's KEV catalog and active exploitation in the wild make it a critical concern for Android users, despite a low EPSS score of 0.01657.
This vulnerability is actively being exploited in the wild, as confirmed by its presence in CISA's KEV catalog. Attackers are leveraging this flaw to gain elevated privileges.
Apply the latest security updates for the Android kernel to address the use-after-free vulnerability. Ensure all Android devices are regularly updated to prevent privilege escalation.
Technical Analysis
CVE-2021-1048 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-2021-1048 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.
Exploit & PoC Resources
All References (1)
Quick Facts
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2021-1048 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