rootpwn

critical · CVSS v3 9.8 · CVSS v4 5.3

CVE-2026-52749

The Kaon AR2140X router improperly issues session cookies in responses to unauthenticated HTTP requests. This vulnerabil…

Description

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.

Scores

Severity
critical
CVSS v2
6.4
CVSS v3
9.8
CVSS v4
5.3
EPSS
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