CVE-2026-52748

Missing authentication for backup functionality in Kaon AR2140X

HIGH
7.1
CVSS Score
Published: September 28, 2026 at 01:01 PM UTC
Updated: September 28, 2026 at 04:31 PM UTC
1 product affected across 1 vendorAR2140

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Severity
HIGH7.1
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v ≤ 4.2.17

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

Third Party Advisory
Source: cverecord
https://cert.pl/en/posts/2026/09/CVE-2026-52748

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.1HIGHCERT-PL
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-306

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