What it is
CVE-2021-25395 is a vulnerability affecting Samsung Mobile Samsung Mobile Devices. A race condition in MFC charger driver prior to SMR MAY-2021 Release 1 allows local attackers to bypass signature check given a radio...
Vulnerability report
Exploited in the wild
Confirmed confidence
In CISA KEV
CVE-2021-25395
Samsung Mobile Devices
Samsung Mobile / Samsung Mobile Devices · affected before SMR MAY-2021 Release 1
- Severity
- CVSS 6.4 · Medium
- Confidence
- Confirmed
- Exploit status
- Exploited in the wild
- EPSS
- 0.4%
- First observed
- —
- Last observed
- —
Decision summary
What security teams need to know first
Direct answers before the deeper technical record.
Is it exploited?
Yes. KEV Intelligence tracks this CVE as a known exploited vulnerability. Confidence is confirmed.
Who is affected?
Samsung Mobile / Samsung Mobile Devices affected before smr may-2021 release 1.
What should we do?
Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
Overview
Samsung Mobile Devices
A race condition in MFC charger driver prior to SMR MAY-2021 Release 1 allows local attackers to bypass signature check given a radio privilege is compromised.
Vendor
Product
Affected
Status
Samsung Mobile
Samsung Mobile Devices
Before SMR MAY-2021 Release 1
Affected
- Published
- 11 Jun 2021
- Exploitation Reported
- 29 Jun 2023
- Attack vector
- Local
- Complexity
- High
- Privileges
- High
- User interaction
- None
Tags
cisa
CVE References
- CVE Record CVE.org · CVE Record https://www.cve.org/CVERecord?id=CVE-2021-25395
- security.samsungmobile.com/securityUpdate.smsb security.samsungmobile.com · CVE Record https://security.samsungmobile.com/securityUpdate.smsb?year=2021&month=5
Exploitation evidence
Why KEV Intelligence marks this CVE as exploited
Third-party attestation and first-party sensor observation are shown separately so teams can judge the evidence chain.
Exploited in the wild
CISA
Independent exploitation attestation added to the KEV Intelligence record.
Known exploited vulnerability sources
Per-source evidence links for KEV attestations are available through the KEV Intelligence Pro API.
Learn about Pro API access| Source | Added |
|---|---|
| CISA First | 2023-06-29 00:00 UTC |
Detection
Operational artifacts and observed signals
Make the evidence actionable in scanner, SOC, and edge-control workflows.
Observed signals
- Request targets
- 0
- User-Agents
- 0
Raw values available in Pro and Enterprise.
Scanner coverage
No scanner integrations recorded yet.
Virtual patch status
No KEV Intelligence virtual patch is currently available. Future rules ship for ModSecurity, Cloudflare, and AWS WAF.
Learn about virtual patches →No detection artifacts or sensor request patterns are available for this CVE yet.
Check back as sensor telemetry and scanner integrations are updated.
Risk and context
Severity, weaknesses, and research context
CVSS v3.1
6.4
Medium
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
EPSS
0.4%
Timeline
From disclosure to observed exploitation
-
Added to CISA KEV
Listed in the CISA Known Exploited Vulnerabilities catalog
-
CVE published
Vulnerability disclosed publicly
-
CVE ID reserved
Identifier reserved by the CNA
Pro API
Automate this intelligence
Confidence, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.
- Evidence confidence and provenance
- First-party sensor telemetry
- PoC and scanner references
- Affected versions and enrichment
- Automation-ready JSON delivery
GET /api/v2/pro/kevs/CVE-2021-25395
Free JSON includes basic KEV fields{
"cve_id": "CVE-2021-25395",
"confidence": "Confirmed",
"cvss_score": 6.4,
"cvss_estimated": false,
"epss_score": 0.00366,
"exploit_status": {
"exploited_in_the_wild": true,
"active_exploitation_observed": false
},
"sensor_telemetry": { "attempts": 0, "sensors": 0 }
}Early warning alerts
Get alerts on high-impact exploitation
Receive curator-selected alerts when exploitation activity warrants attention. Each alert includes the evidence and context needed to decide what requires attention now.