CVE-2023-21443

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-02-09 · updated 2026-06-17
Weakness: CWE-326

Description

Improper cryptographic implementation in Samsung Flow for Android prior to version 4.9.04 allows adjacent attackers to decrypt encrypted messages or inject commands.

Affected products

Samsung Mobile Samsung Flow for Android: before 4.9.04 — fixed in 4.9.04

How to fix

Upgrade to a fixed version: Samsung Mobile Samsung Flow for Android 4.9.04. Check the vendor advisory for mitigations.

References

https://security.samsungmobile.com/serviceWeb.smsb?year=2023&month=02
https://security.samsungmobile.com/serviceWeb.smsb?year=2023&month=02

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