---
id: CVE-2026-15812
title: >-
  Kronosnet: kronosnet: access control list bypass via link id spoofing on
  unencrypted dynamic links
summary: >-
  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) w…
severity: medium
cvss: 4.8
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L'
cvssSource: cna
cwe:
  - CWE-290
vendor: Red Hat
product: kronosnet
affected:
  - kronosnet (all versions)
  - kronosnet (all versions)
  - kronosnet (all versions)
  - openshift/ose-rhel-coreos-9 (all versions)
  - openshift/ose-rhel-coreos-9 (all versions)
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-07-22T14:19:53.423425Z'
published: '2026-07-21'
updated: '2026-11-06'
sourceUpdated: '2026-11-06T17:54:21.965Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-15812'
references:
  - url: 'https://access.redhat.com/security/cve/CVE-2026-15812'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2500851'
    label: RHBZ#2500851
tags:
  - cve.org
epss: 0.00256
epssPercentile: 0.17312
ingestedAt: '2026-11-06T18:00:12.492Z'
---

## Overview

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.

## Affected

- `kronosnet (all versions)`
- `kronosnet (all versions)`
- `kronosnet (all versions)`
- `openshift/ose-rhel-coreos-9 (all versions)`
- `openshift/ose-rhel-coreos-9 (all versions)`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.