Improper access control in WcsExtension for Galaxy Watch prior to Android Watch 16 allows…
Priority LOW 15Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- Low · None · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA.
Summary
Improper access control in WcsExtension for Galaxy Watch prior to Android Watch 16 allows local attackers to access sensitive information.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00138 3rd percentileScored 2026-11-07
Fix Fixed WcsExtension for Galaxy Watch (Samsung Mobile): Android Watch 16
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
Remediation
- Fix · CNA WcsExtension for Galaxy Watch (Samsung Mobile) Fixed in Android Watch 16
Timeline
- 2026-10-02 Threatist record created from CVE-2025-21023
- 2026-10-03 Alias added: GHSA-m5m5-9gmx-4cxx
More Samsung vulnerabilities
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- 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
Sources
- CVE-2025-21023 · CVE Program
- CVE-2025-21023 · NVD
- FIRST EPSS
- GHSA-m5m5-9gmx-4cxx · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences