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CVE-2021-3499

MEDIUM
5.6
CVSS Score
Published: June 2, 2021 at 03:48 PM UTC
Updated: June 17, 2026 at 04:05 AM UTC
1 product affected across 1 vendorOvn Kubernetes

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Severity
MEDIUM5.6
Exploit prediction
EPSS 0.8%

Description

A vulnerability was found in OVN Kubernetes in versions up to and including 0.3.0 where the Egress Firewall does not reliably apply firewall rules when there is multiple DNS rules. It could lead to potentially lose of confidentiality, integrity or availability of a service.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Ovn Kubernetes· Ovn
95%
v ≤ 0.3.0

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

x_refsource_MISCIssue TrackingThird Party Advisory
Source: [email protected]
https://bugzilla.redhat.com/show_bug.cgi?id=1949188

CVSS

5.6MEDIUM[email protected]
Attack Vector
NETWORK
Complexity
HIGH
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
LOW
Availability
LOW
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-863

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