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TI-2026-37867 Aliases CVE-2026-52749GHSA-rmcq-5353-m59x

Improper Authentication in Kaon AR2140X

Priority LOW 30CWE-287Published · Updated

Key facts

Attack vector
Adjacent network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Security bypass
Confidentiality · integrity · availability
Low · Low · None
Fix status
No fix listed

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

Summary

The Kaon AR2140X router improperly issues session cookies in responses to unauthenticated HTTP requests. This vulnerability allows a remote attacker to obtain a valid session identifier without providing credentials, resulting in an authentication bypass. With this access, the attacker can perform unauthorized actions on upgrade-related functionalities. These actions can be abused to force the router to issue GET requests to arbitrarily chosen domains. This issue was identified in firmware versions up to 4.2.17. Status of newer versions remains unknown.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00262 18th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
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
KAONAR2140up to 4.2.17—No fix listedCNA
  • AR2140 VendorKAON Affected up to 4.2.17 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-52749
  2. 2026-10-03 Alias added: GHSA-rmcq-5353-m59x

References

Other 1

  • TI-2024-08063 Kaon CG3000 dhcpcd Command cross site scripting CVSS 4.0MEDIUM 5.1
  • TI-2025-32314 Authentication bypass in KAON KCM3100 CVSS 4.0CRITICAL 9.3
  • TI-2025-06434 Hardcoded credentials in KAON CG3000T/CG3000CT routers CVSS 4.0CRITICAL 9.3
  • TI-2025-39228 Authenticated RCE in KAON PG5298 CVSS 4.0HIGH 8.5
  • TI-2026-37866 Missing authentication for backup functionality in Kaon AR2140X CVSS 4.0HIGH 7.1
  • TI-2026-05280 Missing Authentication for Critical Function in KAON PG5298 CVSS 4.0HIGH 7.1

Sources

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