Threats / Samsung / CVE-2021-25372
CVE-2021-25372
· EUVD no mirror located
· GCVE no mirror located
Verified 2026-06-22
Samsung Mobile Devices vulnerability
Samsung mobile devices contain an out-of-bounds memory access vulnerability in the DSP driver due to improper boundary checking, enabling potential code execution or denial of service.
Verdict
Today item — known-exploited.
An improper boundary check in Samsung mobile device DSP drivers allows out-of-bounds memory access. The vulnerability has been exploited in the wild and could enable local privilege escalation or system compromise through memory corruption.
01
Is it exploitable?
— the evidence, ranked above the scoreReported exploitation
2 independent public reports of in-the-wild exploitation are cataloged.Distinct reporting sources (vendor, incident response, government); open them for the underlying claims.
Exploited in the wild
Listed in the CISA Known Exploited Vulnerabilities catalog (added 2023-06-29).
Probability (EPSS)
EPSS 0.00852 — modeled likelihood of exploitation activity.EPSS is a daily-changing model output — open the source for today's value.
Severity / affected
Affected: Samsung, Mobile Devices. Confirm exact fixed builds in the vendor advisory.
Weakness (CWE)
Mapped to CWE-787 Out-of-bounds Write — weakness family: Memory safety.CWE assignment from the public NVD record; the weakness class drives how the flaw is exploited.
02
Who’s exploiting it?
— attribution turns risk into urgencyAttribution not established
No confirmed (advisory-backed) threat-actor attribution is established for this record. Absence of a named actor is not absence of compromise — see Coverage & confidence.
03
Why it matters
— the attack path, told twice: adversary, then board1
Front door — unauthenticated access narrative 1
Attacker
I craft input that bypasses boundary validation in the DSP driver to trigger out-of-bounds memory access.
Business
Device stability is compromised through denial of service or unexpected system behavior affecting user experience.
2
Keys to the kingdom — privilege/identity takeover narrative 2
Attacker
I leverage the memory corruption to read or write sensitive data in adjacent memory regions.
Business
User data confidentiality is at risk, including credentials, personal information, or authentication tokens stored in memory.
3
Lateral reach — past segmentation narrative 3
Attacker
I exploit the out-of-bounds write capability to execute arbitrary code with DSP driver privileges.
Business
Device security perimeter is breached, enabling unauthorized access to hardware resources and system functions.
04
What to do
— defensible action- Remediate per the vendor advisory — confirm the fixed build for your version and verify exposure.1
Say it to the boardA vulnerability with this evidence profile is a defensible budget line, not a backlog ticket — fund the change against the proof above.
05
Coverage & confidence
— what we know, and what we don’tEstablished (cited)
Coverage gaps — stated, not hidden
Disclosure & credit2
Catalogued by Samsung MobileCNA
Credited with finding itNo finder named in the public CVE record — the work behind this find is unattributed.