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CVE-2021-25395

57
FAUCET Score

CVE-2021-25395 is a race condition vulnerability in the MFC charger driver of Samsung Android devices, allowing local attackers to bypass signature checks if radio privileges are already compromised. With a CVSS score of 6.4 (Medium), it requires high privileges and high attack complexity, but can lead to complete compromise of confidentiality, integrity, and availability. This vulnerability is actively exploited and listed in CISA's KEV catalog, indicating real-world attacks, though public exploit code is not readily available. Community discussion and media coverage are limited but notable, suggesting targeted exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
8.1CPE matchmatch criteria
cpe:2.3:o:samsung:android:8.1:-:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:samsung:android:9.0:smr-apr-2021-r1:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:samsung:android:9.0:smr-feb-2021-r1:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:samsung:android:9.0:smr-jan-2021-r1:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:samsung:android:9.0:smr-mar-2021-r1:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.4MEDIUM

CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
0.5
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.37%
Probability of exploitation in next 30 days
EPSS Percentile
29.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
Added to KEV · Jun 29, 2023
This CVE's current EPSS score of 0.0037 is in the 82nd percentile among its peer group of 418 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

cisa.gov / known-exploited-vulnerabilities-catalog
US Government Resource
security.samsungmobile.com / securityUpdate.smsb
Vendor Advisory