CVE Intelligence
Low

CVE-2026-21006 — Improper access control in Samsung DeX prior to SMR Apr-2026 Release 1 allows physical…

Improper access control in Samsung DeX prior to SMR Apr-2026 Release 1 allows physical attackers to access to hidden notification contents.

Published Apr 13, 2026 · Updated Oct 13, 2026 · Sources: NIST National Vulnerability Database, CVE Program (cve.org) e CISA ADP · CNA: SamsungMobile

Who exploits it and how urgent it is

A 0–100 score combining confirmed exploitation, ransomware and APT use, public exploits, EPSS and severity.

No exploitation signal in the sources consulted so far.
How the score was calculated
  • EPSS 0.1% (30-day exploitation probability)+0

The score orders the patch queue; it does not replace your asset context (internet exposure, criticality, compensating controls).

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.

Exploitation
Not confirmed
Not in CISA KEV — an absence of record, not proof it is unexploited.
EPSS FIRST
0.13%
ahead of 2% of scored CVEs · Oct 14, 2026
Affects
Samsung
Android and 1 more
CVSS base
2.4
Low · 3 source(s)

CISA SSVC assessment CISA

Three decision points CISA publishes for the CVEs it assesses (SSVC 2.0.3). A stakeholder decision, not a severity score.

Exploitation
None
none · proof-of-concept · active
Automatable
No
can an attacker script the kill-chain steps
Technical impact
Partial
partial · total control of the vulnerable component

Remediation

Fixes and mitigations documented by the sources — linked to the original advisory.

No fix documented by the sources we poll. That does not mean none exists: check the vendor advisory.

First 24 hours

Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.

  1. Identify exposed assets running the affected vendor/product/version combinations (Samsung Android, Samsung Mobile Samsung Mobile Devices).
  2. No fix documented in the sources: reduce exposure and monitor the vendor advisory.
  3. Search available logs for exploit probes, errors and authentication anomalies.

Affected scope

Vendor, product and versions as the sources word them.

VendorProductVersionsStatusSource
Samsung Android version 15.0-smr-apr-2025-r1version 15.0-smr-sep-2025-r1version 15.0-smr-oct-2025-r1version 15.0-smr-nov-2025-r1version 15.0-smr-may-2025-r1version 15.0-smr-mar-2026-r1version 15.0-smr-mar-2025-r1version 15.0-smr-jun-2025-r1
and 8 more version 15.0-smr-jul-2025-r1version 15.0-smr-jan-2026-r1version 15.0-smr-jan-2025-r1version 15.0-smr-feb-2026-r1version 15.0-smr-feb-2025-r1version 15.0-smr-dec-2025-r1version 15.0-smr-aug-2025-r1version 15.0
Vulnerable NIST National Vulnerability Database
Samsung Mobile Samsung Mobile Devices versions not specified by the source Vulnerable CVE Program (cve.org) e CISA ADP

Attack characteristics

The CVSS vector, decoded. It describes the attack, not your exposure to it.

Attack vector
Physical
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None

Every base score collected

Sources score independently and may disagree; each row says who scored it and under which version.

ScoreVersionSeverityExpl.ImpactScored by
4.7 CVSS 4.0 Medium — — mobile.security@samsung.com via NIST National Vulnerability Database
4.7 CVSS 4.0 Medium — — SamsungMobile via CVE Program (cve.org) e CISA ADP
2.4 CVSS 3.1 Low 0.9 1.4 nvd@nist.gov via NIST National Vulnerability Database
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N (score shown at the top: nvd@nist.gov)

EPSS over time FIRST

Oct 13, 2026 → Oct 14, 2026 · 2 reading(s) · max 0.13%

Detection

Read off the CVSS vector and the weakness class. Starting points, not tested rules.

  • Local/physical vector: focus on endpoint telemetry (EDR) from affected hosts.
endpoint telemetry (EDR)

Timeline

What happened to this CVE, newest first.

  • 2026
  • Affected products added · samsung mobile/samsung mobile devices
    Oct 13, 2026 · CVE Program (cve.org) e CISA ADP
  • SSVC assessment updated
    Oct 13, 2026 · CVE Program (cve.org) e CISA ADP
  • Record published
    Oct 13, 2026
  • CVSS changed · 2.4
    Oct 13, 2026 · NIST National Vulnerability Database
  • Source status changed · → Analyzed
    Oct 13, 2026 · NIST National Vulnerability Database
  • Record created in this database
    Oct 13, 2026 · NIST National Vulnerability Database
  • CVE published
    Apr 13, 2026 · SamsungMobile

Source activity

Repeated readings are counted rather than listed.

  • 1× Official description updated · Oct 13, 2026 – Oct 13, 2026

References

1 on the record

Elsewhere on this site

Samsung
every CVE for this vendor

Related CVEs (same products)

  • CVE-2026-21126 Improper input validation in getting cover image in libsimba.heifdec.media.samsung.so prior to... 3d
  • CVE-2026-21125 Improper input validation in parsing sheifd in libsimba.heifdec.media.samsung.so prior to SMR Oct... 3d
  • CVE-2026-21120 Use after free in WSM service prior to SMR Oct-2026 Release 1 allows local attackers to... 3d
  • CVE-2026-21122 Out-of-bounds write in libsamsungtts.so prior to SMR Oct-2026 Release 1 allows local attackers to... 3d
  • CVE-2026-21124 Improper input validation in getting cover image in libsimba.heifdec.media.samsung.so prior to... 3d
  • CVE-2026-21116 Out-of-bounds write in libsmkvextractor.so prior to SMR Oct-2026 Release 1 allows local attackers... 3d

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

  • No fixed version, patch or mitigation documented.
  • No CWE classification.
  • No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
  • No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
  • No exploit packet captures, log samples, or incident case IDs supplied.

Answered from this record

Text assembled only from the fields above — no additional claims.

What should defenders know first?

CVE-2026-21006 is "Improper access control in Samsung DeX prior to SMR Apr-2026 Release 1 allows physical…", rated Low. It affects Android (Samsung); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. CVSS 2.4 describes technical severity. EPSS 0.13% estimates the probability of exploitation in 30 days; neither replaces your asset context. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.

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