Vulnerability · CVE-2025-21023
Improper access control in WcsExtension for Galaxy Watch prior to Android Watch 16 allows local attackers to access sensitive information.
Published Aug 6, 2025 · catalog updated Aug 6, 2025 · Samsung Mobile WcsExtension for Galaxy Watch
Last checked Oct 27, 2026. A connected source was read within the last 7 days.
Check if you run it
No confirmed exploitation is on record for CVE-2025-21023. EPSS is 0.13%. Act only if a listed version of Samsung Mobile WcsExtension for Galaxy Watch is installed.
Gaps on this record
- No version range is stored. A customer cannot check an installed version against this record.
- No vendor fix or required action is stored. Compare the linked advisory before you change production.
- Severity
- Low3.3
- Known exploitation
- Not in CISA/VulnCheck KEV
- EPSS
- 0.13%
- Remediation
- Advisory link
- Affected products
- vendor Samsung Mobile WcsExtension for Galaxy Watch patch: Android Watch 16
Improper access control in WcsExtension for Galaxy Watch prior to Android Watch 16 allows local attackers to access sensitive information.
Are you affected?
Enter the version you run. The result uses only the ranges stored on this record.
The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.
- vendor Samsung Mobile WcsExtension for Galaxy Watch patch: Android Watch 16patch: Android Watch 16
How to fix CVE-2025-21023
No stored fix
No vendor fix text is stored. Use the linked advisory before you change production.
Version check
No version range is stored, so an installed version cannot be checked on this page.
Advisory
Open the cve_org record and follow its fix.
Official advisories
What to do
Three questions, each answered from this record only. Confirm the vendor advisory before you patch.
Should you patch?
No confirmed exploitation is on record for CVE-2025-21023. EPSS is 0.13%. Act only if a listed version of Samsung Mobile WcsExtension for Galaxy Watch is installed.
Which versions are affected?
Compare what you have installed with Samsung Mobile WcsExtension for Galaxy Watch patch: Android Watch 16 patch: Android Watch 16. Compare the installed version with the linked vendor advisory before you change production.
What should an analyst verify?
No weakness class is stored. EPSS 0.13%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.
Code
The project this record applies to. Exploit listings stay in References.
No public source repository is identified for this product.
Timeline
Detection, updates, and resolution for this record.
Aug 6, 2025 · EUVD
Detected
Improper access control in WcsExtension for Galaxy Watch prior to Android Watch 16 allows local attackers to access sensitive information.
Aug 6, 2025 · EUVD
Updated
Improper access control in WcsExtension for Galaxy Watch prior to Android Watch 16 allows local attackers to access sensitive information.
Sources
- CVE.orgVulnerability recordCVE-2025-21023
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2025-21023
30-day exploitation probability 0.13%
first.org - EUVDVulnerability recordEUVD-2025-23767
Improper access control in WcsExtension for Galaxy Watch prior to Android Watch 16 allows local attackers to access sensitive information.
euvd.enisa.europa.eu
References
Freshness
Last verified in this catalog Oct 27, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.
- FIRST EPSSOct 27, 2026
- CVE.orgOct 21, 2026
- EUVDOct 20, 2026