Is CVE-2021-25372 actively exploited?

Yes. KEV Intelligence tracks CVE-2021-25372 as a known exploited vulnerability. Confidence is confirmed.

What exploitation activity has KEV Intelligence observed?

KEV Intelligence has not yet recorded sensor-observed exploitation attempts for CVE-2021-25372. Our sensors continue to monitor for activity targeting this CVE.

Which versions are affected?

CVE-2021-25372 affects Samsung Mobile Samsung Mobile Devices. Reported affected version: Q(10.0), R(11.0) devices with exynos980, exynos2100, exynos9830 to < SMR Mar-2021 Release 1.

Yes. CVE-2021-25372 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

Vulnerability report

Exploited in the wild Confirmed confidence In CISA KEV

CVE-2021-25372

Q: What is CVE-2021-25372?

CVE-2021-25372 is a vulnerability affecting Samsung Mobile Samsung Mobile Devices. An improper boundary check in DSP driver prior to SMR Mar-2021 Release 1 allows out of bounds memory access.

Q: How should organizations remediate it?

Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.

Q: Is it in CISA KEV?

Yes. CVE-2021-25372 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

Samsung Mobile Devices

Samsung Mobile / Samsung Mobile Devices · affected before SMR Mar-2021 Release 1

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Severity: CVSS 6.1 · Medium
Confidence: Confirmed
Exploit status: Exploited in the wild
EPSS: 0.8%
First observed: —
Last observed: —

Decision summary

What security teams need to know first

Direct answers before the deeper technical record.

What it is

CVE-2021-25372 is a vulnerability affecting Samsung Mobile Samsung Mobile Devices. An improper boundary check in DSP driver prior to SMR Mar-2021 Release 1 allows out of bounds memory access.

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 mar-2021 release 1.

What should we do?

Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.

Overview

An improper boundary check in DSP driver prior to SMR Mar-2021 Release 1 allows out of bounds memory access

An improper boundary check in DSP driver prior to SMR Mar-2021 Release 1 allows out of bounds memory access.

Vendor Product Affected Status

Samsung Mobile Samsung Mobile Devices Before SMR Mar-2021 Release 1 Affected

Published: 26 Mar 2021
Exploitation Reported: 29 Jun 2023
Attack vector: Physical
Complexity: High
Privileges: High
User interaction: None

CVE References

CVE Record CVE.org · CVE Record https://www.cve.org/CVERecord?id=CVE-2021-25372
security.samsungmobile.com/securityUpdate.smsb security.samsungmobile.com · CVE Record https://security.samsungmobile.com/securityUpdate.smsb
security.samsungmobile.com security.samsungmobile.com · CVE Record https://security.samsungmobile.com

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

Recorded 29 Jun 2023

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.

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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

6.1 Medium

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

EPSS

0.8%

Weaknesses

Improper Check or Handling of Exceptional Conditions CWE-703

Timeline

From disclosure to observed exploitation

29 Jun 2023
Added to CISA KEV

Listed in the CISA Known Exploited Vulnerabilities catalog
26 Mar 2021
CVE published

Vulnerability disclosed publicly
19 Jan 2021
CVE ID reserved

Identifier reserved by the CNA

Pro API

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Confidence, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.

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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-2021-25372

Free JSON includes basic KEV fields

{
  "cve_id": "CVE-2021-25372",
  "confidence": "Confirmed",
  "cvss_score": 6.1,
  "cvss_estimated": false,
  "epss_score": 0.00804,
  "exploit_status": {
    "exploited_in_the_wild": true,
    "active_exploitation_observed": false
  },
  "sensor_telemetry": { "attempts": 0, "sensors": 0 }
}

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