Medium severity · published Sep 9, 2026
CVE-2026-21107
Out-of-bounds write in Samsung Notes prior to version 4.4.45.5 allows local attackers to write out-of-bounds memory
5.5
CVSS
0.1%
EPSS
No
On KEV
Description
Out-of-bounds write in Samsung Notes prior to version 4.4.45.5 allows local attackers to write out-of-bounds memory.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 3% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SN
Samsung Notes · Samsung Mobile
All versions, or not specified · source: vendor
NO
Notes · Samsung
before 4.4.45.5 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-21107
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-21107
Vendor Advisory
https://security.samsungmobile.com/serviceWeb.smsb?year=2026&month=09
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