CVE-2026-15812 MEDIUM

CVE-2026-15812: Kronosnet: kronosnet: access control list bypass via link id spoofing on unencrypted dynamic links

Vendor Red Hat
Product Red Hat Enterprise Linux 10
Weakness CWE-290
Published July 21, 2026
Last update July 21, 2026

CVSS base score

4.8/10
Attack vector Network
Attack complexity High
Privileges required None
User interaction None
Confidentiality None
Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L

What the vulnerability does

01Description

A vulnerability was found in the internal Access Control List (ACL) subsystem of kronosnet (Version affected: <= 1.34). When the framework is explicitly configured to manage dynamic links (accepting network traffic from any IP address) without network payload encryption, the validation architecture implicitly trusts the link ID provided within incoming data packets. A remote, unauthenticated attacker can exploit this lack of validation by spoofing a legitimate link ID inside crafted network frames. This allows the attacker to fully bypass the ACL framework and inject arbitrary data packets into the application layer, potentially leading to data corruption or service instabilities.

Key dates

02Disclosure timeline

July 21, 2026 CVE published

Related vulnerabilities

04Related CVE