CVE-2026-52748 Missing authentication for backup functionality in Kaon AR2140X
Unauthenticated attackers can trigger configuration backups, causing denial of service and potentially exposing encrypted configuration data.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-52748?
CVE-2026-52748 is a high-severity missing authorization vulnerability in Kaon AR2140, published on 28 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official 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.
Weakness: CWE-306
Which versions are affected by CVE-2026-52748?
How do I fix CVE-2026-52748?
No fix has been published for CVE-2026-52748 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-52748 being exploited?
There is no known exploitation of CVE-2026-52748 in the wild and no public exploit code.
Sources
Also known as GHSA-vcfv-29fp-vc3c.