Vulnerability · CVE-2025-21066
Out-of-bounds read in the SPI decoder in Samsung Notes prior to version 4.4.30.63 allows local attackers to access out-of-bounds memory.
Published Oct 10, 2025 · catalog updated Oct 10, 2025 · Samsung Mobile Samsung Notes
Last checked Nov 5, 2026. A connected source was read within the last 7 days.
Check if you run it
No confirmed exploitation is on record for CVE-2025-21066. EPSS is 0.13%. Act only if a listed version of Samsung Mobile Samsung Notes is installed.
Gaps on this record
- No vendor fix or required action is stored. Compare the linked advisory before you change production.
Same product and reporting
- CVE-2025-21070 · Medium
- CVE-2025-21069 · Medium
- CVE-2025-21068 · Medium
- CVE-2025-21067 · Medium
- CVE-2025-21057 · Medium
- Severity
- Medium4.0
- Known exploitation
- Not in CISA/VulnCheck KEV
- EPSS
- 0.13%
- Remediation
- Advisory link
- Affected products
- vendor Samsung Mobile Samsung Notes patch: 4.4.30.63
Out-of-bounds read in the SPI decoder in Samsung Notes prior to version 4.4.30.63 allows local attackers to access out-of-bounds memory.
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 Samsung Notes patch: 4.4.30.63patch: 4.4.30.63
How to fix CVE-2025-21066
No stored fix
No vendor fix text is stored. Use the linked advisory before you change production.
Version check
Seen in patch: 4.4.30.63
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-2025-21066. EPSS is 0.13%. Act only if a listed version of Samsung Mobile Samsung Notes is installed.
Which versions are affected?
Compare what you have installed with Samsung Mobile Samsung Notes patch: 4.4.30.63 patch: 4.4.30.63. 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.
Oct 10, 2025 · EUVD
Detected
Out-of-bounds read in the SPI decoder in Samsung Notes prior to version 4.4.30.63 allows local attackers to access out-of-bounds memory.
Oct 10, 2025 · EUVD
Updated
Out-of-bounds read in the SPI decoder in Samsung Notes prior to version 4.4.30.63 allows local attackers to access out-of-bounds memory.
Sources
- CVE.orgVulnerability recordCVE-2025-21066
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2025-21066
30-day exploitation probability 0.13%
first.org - EUVDVulnerability recordEUVD-2025-33667
Out-of-bounds read in the SPI decoder in Samsung Notes prior to version 4.4.30.63 allows local attackers to access out-of-bounds memory.
euvd.enisa.europa.eu
References
Freshness
Last verified in this catalog Nov 5, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.
- FIRST EPSSNov 5, 2026
- CVE.orgOct 23, 2026
- EUVDOct 23, 2026