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CVE-2026-5367

HIGH

8.6

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.

CVE Details

CVSS v3.1 Score8.6

SeverityHIGH

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

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published4/24/2026

Last Modified4/24/2026

Sourcenvd

Honeypot Sightings0

Weaknesses (CWE)

CWE-130

References

https://access.redhat.com/security/cve/CVE-2026-5367(secalert@redhat.com)

https://bugzilla.redhat.com/show_bug.cgi?id=2455863(secalert@redhat.com)

http://www.openwall.com/lists/oss-security/2026/04/20/3(af854a3a-2127-422b-91ae-364da2661108)

http://www.openwall.com/lists/oss-security/2026/04/20/5(af854a3a-2127-422b-91ae-364da2661108)

IOC Correlations

No correlations recorded

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