CVE-2026-52748
Missing authentication for backup functionality in Kaon AR2140X
- State
- Published
- Severity
- 7.1 High
- Published
- Sep 28, 2026
- Updated
- Sep 28, 2026
- Reserved
- Jun 8, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 7.1 High | CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N | CERT-PL |
Weaknesses
- CWE-306 Missing authentication for critical function
Affected Products
| Product | Versions |
|---|---|
AR2140Kaon |
|
References
- https://cert.pl/en/posts/2026/09/CVE-2026-52748third-party-advisory
Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.