CVE-2026-5367

HIGH 8.6

Ovn: ovn: information disclosure via crafted dhcpv6 packets

CVSS Score

8.6

EPSS Score

0.0%

EPSS Percentile

0th

A flaw was found in OVN (Open Virtual Network). A remote attacker, by sending crafted DHCPv6 (Dynamic Host Configuration Protocol for IPv6) SOLICIT packets with an inflated Client ID length, could cause the ovn-controller to read beyond the bounds of a packet. This out-of-bounds read can lead to the disclosure of sensitive information stored in heap memory, which is then returned to the attacker's virtual machine port.

CWE	CWE-130
Vendor	red hat
Product	fast datapath for rhel 7
Published	Apr 24, 2026
Last Updated	Apr 24, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

None

Availability

None

Affected Versions

Red Hat / Fast Datapath for RHEL 7

All versions affected

Red Hat / Fast Datapath for RHEL 7

All versions affected

Red Hat / Fast Datapath for RHEL 7

All versions affected

Red Hat / Fast Datapath for RHEL 8

All versions affected

Red Hat / Fast Datapath for RHEL 8

All versions affected

Red Hat / Fast Datapath for RHEL 8

All versions affected

Red Hat / Fast Datapath for RHEL 8

All versions affected

Red Hat / Fast Datapath for RHEL 8

All versions affected

Red Hat / Fast Datapath for RHEL 8

All versions affected

Red Hat / Fast Datapath for RHEL 8

All versions affected

Red Hat / Fast Datapath for RHEL 8

All versions affected

Red Hat / Fast Datapath for RHEL 8

All versions affected

Red Hat / Fast Datapath for RHEL 8

All versions affected