CVE-2021-25394
Published: June 29, 2023
Official Description
Samsung mobile devices contain a race condition vulnerability within the MFC charger driver that leads to a use-after-free allowing for a write given a radio privilege is compromised.
CISA KEV Advisory
Samsung Mobile Devices Race Condition Vulnerability
Samsung mobile devices contain a race condition vulnerability within the MFC charger driver that leads to a use-after-free allowing for a write given a radio privilege is compromised.
Apply updates per vendor instructions or discontinue use of the product if updates are unavailable
Risk Analysis
A race condition in the MFC charger driver of Samsung mobile devices could lead to a use-after-free vulnerability, allowing for a write operation if radio privileges are compromised. The vulnerability is urgent due to its inclusion in CISA's KEV and active exploitation in the wild.
This vulnerability is actively being exploited in the wild, as confirmed by its presence in CISA's KEV. Exploitation requires a prior compromise of radio privileges.
Install the latest security updates for Samsung mobile devices to address the race condition in the MFC charger driver. Keeping mobile device software updated is critical for security.
Technical Analysis
CVE-2021-25394 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-2021-25394 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 (2)
Quick Facts
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2021-25394 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