CVE-2025-0650

Ovn: egress acls may be bypassed via specially crafted udp packet

HIGH 8.1

At a glance

Source: NVD
EPSS: EPSS 0.87 % · percentile 59 (2026-10-28)
State: PUBLISHED
Published: 2025-01-23 16:34 UTC
Updated: 2025-11-20 07:25 UTC
Assigner: redhat
NVD status: Deferred

Description

A flaw was found in the Open Virtual Network (OVN). Specially crafted UDP packets may bypass egress access control lists (ACLs) in OVN installations configured with a logical switch with DNS records set on it and if the same switch has any egress ACLs configured. This issue can lead to unauthorized access to virtual machines and containers running on the OVN network.

Weaknesses (CWE)

CWE-284 — Improper Access Control

References

Scores

Version	Score	Vector	Scored by
CVSS 3.1	HIGH 8.1	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H	redhat
CVSS 3.1	HIGH 8.1	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H	NVD · secalert@redhat.com (Secondary)

European references

ENISA EUVD · EUVD-2025-1804
GCVE · GCVE-0-2025-0650

Affected products

Product	Versions
ovn	unaffected 22.03.8 ; unaffected 24.03.5 ; unaffected 24.09.2
Red Hat · Fast Datapath for Red Hat Enterprise Linux 8	unaffected 0:22.03.7-11.el8fdp < *
Red Hat · Fast Datapath for Red Hat Enterprise Linux 8	unaffected 0:22.06.0-273.el8fdp < *
Red Hat · Fast Datapath for Red Hat Enterprise Linux 8	unaffected 0:22.09.2-86.el8fdp < *
Red Hat · Fast Datapath for Red Hat Enterprise Linux 8	unaffected 0:22.12.1-107.el8fdp < *
Red Hat · Fast Datapath for Red Hat Enterprise Linux 8	unaffected 0:23.03.3-22.el8fdp < *
Red Hat · Fast Datapath for Red Hat Enterprise Linux 8	unaffected 0:23.06.4-26.el8fdp < *
Red Hat · Fast Datapath for Red Hat Enterprise Linux 9	unaffected 0:22.03.7-11.el9fdp < *
Red Hat · Fast Datapath for Red Hat Enterprise Linux 9	unaffected 0:22.06.0-273.el9fdp < *
Red Hat · Fast Datapath for Red Hat Enterprise Linux 9	unaffected 0:22.09.2-86.el9fdp < *
Red Hat · Fast Datapath for Red Hat Enterprise Linux 9	unaffected 0:22.12.1-107.el9fdp < *
Red Hat · Fast Datapath for Red Hat Enterprise Linux 9	unaffected 0:23.03.3-22.el9fdp < *
Red Hat · Fast Datapath for Red Hat Enterprise Linux 9	unaffected 0:23.06.4-26.el9fdp < *
Red Hat · Fast Datapath for Red Hat Enterprise Linux 9	unaffected 0:23.09.6-12.el9fdp < *
Red Hat · Fast Datapath for Red Hat Enterprise Linux 9	unaffected 0:24.03.4-53.el9fdp < *
Red Hat · Fast Datapath for Red Hat Enterprise Linux 9	unaffected 0:24.09.1-66.el9fdp < *
Red Hat · Red Hat OpenShift Container Platform 4
Red Hat · Red Hat OpenShift Container Platform 4
Red Hat · Red Hat OpenShift Container Platform 4
Red Hat · Red Hat OpenShift Container Platform 4

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD