# CVE-2026-21133: Samsung Flow path traversal in clipboard access

Source: https://junglewise.ai/threats/cve-2026-21133-path-traversal-in-samsung-flow-prior-to-version-4-9-22-1-allows  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-12. Updated: 2026-10-16  
License: CC BY 4.0 with a link back

CVE-2026-21133 · Severity: info · Published 2026-10-12

Samsung Flow is a mobile application used to synchronize data across Samsung devices. A path traversal vulnerability in versions prior to 4.9.22.1 allows a local attacker with device access to read sensitive data stored in the device clipboard. This could expose passwords, personal messages, authentication tokens, or other confidential information a user recently copied.

Technologies: [Samsung Flow](https://junglewise.ai/threats/technologies/samsung-flow). Vendors: [Samsung](https://junglewise.ai/threats/vendors/samsung).

## Quick answers

**Is CVE-2026-21133 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-21133 being exploited in the wild.

**How severe is CVE-2026-21133?** Informational severity, published 12 October 2026.

**Which products and versions are affected?** Samsung Flow prior to 4.9.22.1.

**Is there a fix for CVE-2026-21133?** Yes: fixed in 4.9.22.1. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-21133 attacked?** It is attacked with local access, in a network appliance.

**Am I affected by CVE-2026-21133?** Check whether you run Samsung Flow at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- Fixed in 4.9.22.1

## Technical details

A path traversal flaw in Samsung Flow prior to version 4.9.22.1 permits local attackers to bypass access controls and retrieve clipboard contents. The vulnerability requires local access to the device and does not require authentication or user interaction. Successful exploitation results in unauthorized access to clipboard data, which may contain sensitive credentials or personal information.

## Affected products

- Samsung Flow prior to 4.9.22.1

## Timeline

- 2026-10-12: disclosed

## References

- [https://security.samsungmobile.com/serviceWeb.smsb?year=2026&month=10](https://security.samsungmobile.com/serviceWeb.smsb?year=2026&month=10)

## Related threats

- [Samsung Flow improper authentication allows adjacent network access](https://junglewise.ai/threats/cve-2026-21134-improper-authentication-in-samsung-flow-prior-to-version-4-9-22-4)
- [Samsung Flow incorrect default permission privilege escalation](https://junglewise.ai/threats/cve-2026-21131-incorrect-default-permission-in-samsung-flow-prior-to-version-4-9)