CVE-2025-0650: Access Control Flaw (CVSS 8.1)

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.

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CVSS v3.1 Score

8.1

HIGH

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

Weakness Type (CWE)

CWE-284 CWE-284

References

Other References

https://access.redhat.com/errata/RHSA-2025:1083 https://access.redhat.com/errata/RHSA-2025:1084 https://access.redhat.com/errata/RHSA-2025:1085 https://access.redhat.com/errata/RHSA-2025:1086 https://access.redhat.com/errata/RHSA-2025:1087 https://access.redhat.com/errata/RHSA-2025:1088 https://access.redhat.com/errata/RHSA-2025:1089 https://access.redhat.com/errata/RHSA-2025:1090 https://access.redhat.com/errata/RHSA-2025:1091 https://access.redhat.com/errata/RHSA-2025:1092

Frequently Asked Questions

What is CVE-2025-0650? +

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. It has a CVSS v3.1 base score of 8.1 (HIGH).

How severe is CVE-2025-0650? +

CVE-2025-0650 has a CVSS v3.1 score of 8.1 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

How do I check if I'm vulnerable to CVE-2025-0650? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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