CVE-2026-15812

MEDIUM

Kronosnet: kronosnet: access control list bypass via link id spoofing on unencrypted dynamic links

Title source: cna
STIX 2.1

Description

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.

References (2)

Core 2
Core References
Vdb Entry, X_Refsource_Redhat vdb-entry x_refsource_redhat
https://access.redhat.com/security/cve/CVE-2026-15812
Issue Tracking, X_Refsource_Redhat issue-tracking x_refsource_redhat
RHBZ#2500851
https://bugzilla.redhat.com/show_bug.cgi?id=2500851

Scores

CVSS v3 4.8
EPSS 0.0016
EPSS Percentile 6.2%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-290
Status published
Products (4)
Red Hat/Red Hat Enterprise Linux 10
Red Hat/Red Hat Enterprise Linux 8
Red Hat/Red Hat Enterprise Linux 9
Red Hat/Red Hat OpenShift Container Platform 4
Published Jul 21, 2026
Tracked Since Jul 21, 2026