High severity · published Apr 24, 2026
CVE-2026-5367
Ovn: ovn: information disclosure via crafted dhcpv6 packets
8.6
CVSS
0.9%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.9% · higher than 59% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FD
Fast Datapath for RHEL 8 · Red Hat
All versions, or not specified · source: vendor, CISA
FD
Fast Datapath for RHEL 9 · Red Hat
All versions, or not specified · source: vendor, CISA
FD
Fast Datapath for Red Hat Enterprise Linux 10 · Red Hat
All versions, or not specified · source: vendor, CISA
FD
Fast Datapath for Red Hat Enterprise Linux 8 · Red Hat
All versions, or not specified · source: vendor, CISA
FD
Fast Datapath for Red Hat Enterprise Linux 9 · Red Hat
All versions, or not specified · source: vendor, CISA
RH
Red Hat OpenShift Container Platform 4 · Red Hat
All versions, or not specified · source: vendor, CISA