8.1

CVE-2025-0650: ovn Improper Access Control

CVSS: 8.1v3.1HighDeferred
AliasesSUSE-SU-2025:0561-1SUSE-SU-2025:0578-1SUSE-SU-2025:0583-1
Published 23-01-2025Last modified 20-11-2025
Open JSON

Vulnerability summary

CVE-2025-0650 is a high (CVSS 8.1) Improper Access Control vulnerability in ovn. EPSS estimates a 0.87% chance of exploitation in the next 30 days, higher than 58.3% of scored vulnerabilities.

Overall risk
33/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.1/10
010
High · v3.1 (CVE.org)
EPSS score
0.87%
0%100%
Low · +0.01 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 5 · Related 5
SUSE-SU-2026:0280-1SUSE-SU-2026:0290-1SUSE-SU-2026:20049-1SUSE-SU-2026:20061-1SUSE-SU-2026:23188-1

Timeline

  1. 23-01-2025
    PublishedVulnerability first disclosed.
  2. 20-11-2025
    Last modifiedVulnerability information updated.

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.

CVSS metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

0.87%

Chance of exploitation in the next 30 days

Percentile

58%

Versus all other CVEs

30-day change

+0.01 pp

From 0.86% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.87%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Redhat81 products
  • ovn22.03< 0:22.03.7-11.el8fdp | < 0:22.03.7-11.el9fdp
  • ovn22.03-central< 0:22.03.7-11.el8fdp | < 0:22.03.7-11.el9fdp
  • ovn22.03-central-debuginfo< 0:22.03.7-11.el8fdp | < 0:22.03.7-11.el9fdp
  • ovn22.03-debuginfo< 0:22.03.7-11.el8fdp | < 0:22.03.7-11.el9fdp
  • ovn22.03-debugsource< 0:22.03.7-11.el8fdp | < 0:22.03.7-11.el9fdp
Suse17 products
  • openvswitch3&distro=SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS< 3.1.0-150500.3.22.1
  • openvswitch3&distro=SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS< 3.1.0-150500.3.22.1
  • openvswitch3&distro=SUSE Linux Enterprise Micro 5.5< 3.1.0-150500.3.22.1
  • openvswitch3&distro=SUSE Linux Enterprise Server 15 SP5-LTSS< 3.1.0-150500.3.22.1
  • openvswitch3&distro=SUSE Linux Enterprise Server for SAP Applications 15 SP5< 3.1.0-150500.3.22.1
Opensuse3 products
  • openvswitch3&distro=openSUSE Leap 15.6< 3.1.0-150500.3.22.1
  • openvswitch&distro=openSUSE Leap 15.6< 3.1.0-150600.33.6.1
  • openvswitch&distro=openSUSE Tumbleweed< 3.3.2-25.1
Debian1 product
  • ovnAll versions (No fix recorded) | < 25.03.0~git20250216.7c69af7-1
Ubuntu1 product
  • ovn< 20.03.2-0ubuntu0.20.04.6 | < 22.03.3-0ubuntu0.22.04.5 | < 24.03.2-0ubuntu0.24.04.2

5 vendors · 103 products

References

46 links
Show all 46 references