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TI-2026-70843 Aliases CVE-2026-21121GHSA-r848-gvm6-pwpr

Permission handling flaw in Samsung CmcCore exposes privileged APIs

Priority LOW 29CWE-280Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
High · None · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

CmcCore in Samsung Mobile Devices is affected before SMR Oct-2026 Release 1. Improper handling of insufficient permissions (CWE-280) lets local attackers use the privileged APIs. A local attacker with no privileges and no user interaction can exploit this, with high impact to confidentiality.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

Improper handling of insufficient permission in CmcCore prior to SMR Oct-2026 Release 1 allows local attackers to use the privileged APIs.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00113 1st percentileScored 2026-11-07
Fix Fixed Samsung Mobile Devices (Samsung Mobile): SMR Oct-2026 Release in Android XR 14

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
SamsungSamsung Mobile Devices—SMR Oct-2026 Release in Android XR 14Patch availableCNA
  • Samsung Mobile Devices VendorSamsung Affected — Fixed in SMR Oct-2026 Release in Android XR 14 Patch available CNA

Remediation

Install the SMR Oct-2026 Release in Android XR 14 on Samsung Mobile Devices, which fixes this.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

  • Fix · CNA Samsung Mobile Devices (Samsung Mobile) Fixed in SMR Oct-2026 Release in Android XR 14

Timeline

  1. 2026-10-12 Threatist record created from CVE-2026-21121
  2. 2026-10-12 Alias added: GHSA-r848-gvm6-pwpr
  3. 2026-10-12 Priority changed: MEDIUM → LOW
  4. 2026-10-16 Weakness changed · CISA ADP
  5. 2026-10-16 CISA SSVC decision points changed

References

Other 1

  • TI-2025-15039 Out-of-bounds write in Samsung Mobile Devices KEVCVSS 3.1CRITICAL 9.8
  • TI-2025-15038 Out-of-bounds write in Samsung Mobile Devices KEVCVSS 3.1CRITICAL 9.8
  • TI-2025-04133 Path traversal in Samsung MagicINFO 9 Server KEVCVSS 3.1CRITICAL 9.8
  • TI-2024-06858 Path traversal in Samsung MagicINFO 9 Server KEVCVSS 3.1CRITICAL 9.8
  • TI-2016-00916 Integer overflow in Adobe Flash Player before 18.0.0.333 and 19.x through 21.x before… KEVCVSS 3.1HIGH 8.8
  • TI-2022-06595 An improper check or handling of exceptional conditions in NPU driver prior to SMR… KEVCVSS 3.1HIGH 7.8
See all 2043 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences