Medium severity · published Oct 12, 2026
CVE-2026-21134
Improper authentication in Samsung Flow prior to version 4.9.22.4 allows adjacent attackers to access sensitive information
6.1
CVSS
0.2%
EPSS
No
On KEV
Description
Improper authentication in Samsung Flow prior to version 4.9.22.4 allows adjacent attackers to access sensitive information.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 8% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SF
Samsung Flow · Samsung Mobile
All versions, or not specified · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-21134
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-21134
security.samsungmobile.com
https://security.samsungmobile.com/serviceWeb.smsb?year=2026&month=10
More from Samsung Flow
5.1
CVE-2026-21133
Path traversal in Samsung Flow prior to version 4.9.22.1 allows local attackers to access clipboard data
2.1
CVE-2026-21131
Incorrect default permission in Samsung Flow prior to version 4.9.22.4 allows local attackers to launch an arbitrary activity with Samsung Flow privileges on the connected device