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TI-2026-70856 Aliases CVE-2026-21134GHSA-fm28-q8cf-g8mm

Samsung Flow improper authentication exposes data to adjacent attackers

Priority LOW 26CWE-287Published · Updated

Key facts

Attack vector
Adjacent network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
Present
Impact type
Security bypass
Confidentiality · integrity · availability
High · Low · Low
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-287.

Summary

Improper authentication in Samsung Flow before version 4.9.22.4 lets adjacent attackers access sensitive information. The weakness is tracked as CWE-287, Improper Authentication. The CVSS 4.0 vector (AV:A/AC:L/AT:P/PR:N/UI:N) shows that no privileges and no user interaction are needed, and attack complexity is low. The base score is 6.1 (MEDIUM).

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

Improper authentication in Samsung Flow prior to version 4.9.22.4 allows adjacent attackers to access sensitive information.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00188 8th percentileScored 2026-11-07
Fix Fixed Samsung Flow (Samsung Mobile): 4.9.22.4

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
SamsungSamsung Flow—4.9.22.4Patch availableCNA
  • Samsung Flow VendorSamsung Affected — Fixed in 4.9.22.4 Patch available CNA

Remediation

Samsung Mobile fixed this in version 4.9.22.4. Update Samsung Flow to that version or later.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

  • Fix · CNA Samsung Flow (Samsung Mobile) Fixed in 4.9.22.4

Timeline

  1. 2026-10-12 Threatist record created from CVE-2026-21134
  2. 2026-10-12 Alias added: GHSA-fm28-q8cf-g8mm
  3. 2026-10-12 Priority changed: MEDIUM → LOW
  4. 2026-10-16 Weakness changed · CISA ADP
  5. 2026-10-16 CISA SSVC decision points changed

References

Other 1

  • TI-2025-15039 Out-of-bounds write in Samsung Mobile Devices KEVCVSS 3.1CRITICAL 9.8
  • TI-2025-15038 Out-of-bounds write in Samsung Mobile Devices KEVCVSS 3.1CRITICAL 9.8
  • TI-2025-04133 Path traversal in Samsung MagicINFO 9 Server KEVCVSS 3.1CRITICAL 9.8
  • TI-2024-06858 Path traversal in Samsung MagicINFO 9 Server KEVCVSS 3.1CRITICAL 9.8
  • TI-2016-00916 Integer overflow in Adobe Flash Player before 18.0.0.333 and 19.x through 21.x before… KEVCVSS 3.1HIGH 8.8
  • TI-2022-06595 An improper check or handling of exceptional conditions in NPU driver prior to SMR… KEVCVSS 3.1HIGH 7.8
See all 2043 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences