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Vulnerabilities CVE-2026-5367

CVE-2026-5367

High
Open
TLP:CLEAR

Ovn: ovn: information disclosure via crafted dhcpv6 packets

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Description

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.

Details

CVSS Score
8.6
EPSS Score
0.87%

55.8th percentile

CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Confidence
90%
Published
Apr 24, 2026
Last Modified
Aug 25, 2026
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