HOMEVULNERABILITIESCVE-2021-25394
HIGHCISA KEVIN THE WILD

CVE-2021-25394

Published: June 29, 2023

EPSS:0.61%probability of exploitation in 30 daysPercentile:69.5th

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.

NVD Source

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.

Added to KEV: 2023-06-29Federal patch deadline: 2023-07-20
Required Action (CISA)

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.

Recommended Action

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.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

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

Mentioned vendors (from description):
Samsung
CPE data not yet available in NVD for this CVE.

Exploit & PoC Resources

ACTIVE EXPLOITATIONConfirmed exploitation in the wild
External links open in a new tab. Always verify in a controlled environment before use.

All References (2)

Quick Facts

CVE IDCVE-2021-25394
SeverityHIGH
CISA KEVYES — Active Exploitation
ExploitIN THE WILD
EPSS (30d)0.61%
PublishedJun 29, 2023

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
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.