CVE-2026-52748: CWE-306 Missing authentication for critical function in Kaon AR2140
The Kaon AR2140X router contains a vulnerability where the backup functionality is accessible without authentication. This allows an unauthenticated remote attacker to trigger a configuration backup and retrieve it in a form encrypted by a device-specific key. Triggering this function renders the router inoperable for a substantial period of time. This issue was identified in firmware versions up to 4.2.17. Status of newer versions remains unknown.
AI Analysis
Technical Summary
CVE-2026-52748 is a missing authentication vulnerability (CWE-306) in the Kaon AR2140X router's backup functionality. An unauthenticated remote attacker can invoke the backup process and obtain the configuration backup encrypted with a device-specific key. Triggering this function also causes a denial of service by rendering the router inoperable for a substantial time. The vulnerability affects firmware versions up to 4.2.17. No patch or remediation information is currently available.
Potential Impact
An unauthenticated remote attacker can access the backup function, retrieve encrypted configuration data, and cause a denial of service by making the router inoperable for a significant duration. The confidentiality of the configuration backup is partially protected by device-specific encryption, but unauthorized access is still possible. Availability is impacted due to the router becoming temporarily unusable.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict network access to the router's backup functionality to trusted users only, if possible, to reduce exposure.
CVE-2026-52748: CWE-306 Missing authentication for critical function in Kaon AR2140
Description
The Kaon AR2140X router contains a vulnerability where the backup functionality is accessible without authentication. This allows an unauthenticated remote attacker to trigger a configuration backup and retrieve it in a form encrypted by a device-specific key. Triggering this function renders the router inoperable for a substantial period of time. This issue was identified in firmware versions up to 4.2.17. Status of newer versions remains unknown.
CVSS v4.0
Score 7.1high
Affected software
Kaon
AR2140
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-52748 is a missing authentication vulnerability (CWE-306) in the Kaon AR2140X router's backup functionality. An unauthenticated remote attacker can invoke the backup process and obtain the configuration backup encrypted with a device-specific key. Triggering this function also causes a denial of service by rendering the router inoperable for a substantial time. The vulnerability affects firmware versions up to 4.2.17. No patch or remediation information is currently available.
Potential Impact
An unauthenticated remote attacker can access the backup function, retrieve encrypted configuration data, and cause a denial of service by making the router inoperable for a significant duration. The confidentiality of the configuration backup is partially protected by device-specific encryption, but unauthorized access is still possible. Availability is impacted due to the router becoming temporarily unusable.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict network access to the router's backup functionality to trusted users only, if possible, to reduce exposure.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- CERT-PL
- Date Reserved
- 2026-06-08T14:40:31.449Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6aba7026f7a7c54106c00b47
Added to database: 09/28/2026, 13:48:22 UTC
Last enriched: 09/28/2026, 14:02:53 UTC
Last updated: 09/29/2026, 02:50:13 UTC
Views: 17
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