CVE-2026-47866: VMware Avi Load Balancer contains an authorization bypass vulnerability

Routine

HIGH 8.3UPGRADE

CVE-2026-47866 is a high-severity flaw (CVSS 8.3) affecting vmware avi load balancer. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

VMware Avi Load Balancer contains an authorization bypass vulnerability. A malicious actor on the network can access a limited subset of the Avi Control Plane without proper authorization. Affected versions: 32.1.1 (fixed in 32.1.2) 31.1.1 through 31.2.2 (fixed in 31.2.2-2p3) 30.1.1 through 30.2.6 (fixed in 30.2.7) 22.1.1 through 22.1.7 (fixed in 30.2.7)

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	8.3 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.4% (top 69%)
CISA exploited list	No
Weakness	CWE-863
Published	2026-07-18
Last modified	2026-10-24

Publisher (CNA): VMware · Vendor: broadcom

Last updated 2026-10-24 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-07-18 09:17 UTCPublished CVE record published
2026-10-24 20:10 UTCUpdated Record last modified

broadcom vmware avi load balancer UPGRADE

Affected: >= 22.1.1 and <= 22.1.7 · >= 30.1.1 and < 30.2.7 · >= 31.1.1 and < 31.2.2 · 31.2.2 · 31.2.2 2p1 · 31.2.2 2p2 · 32.1.1

Fixed in: 30.2.7, 31.2.2

Safe to downgrade to: a release before 22.1.1

1. Check installed version

apt-cache policy vmware-avi-load-balancer || rpm -q vmware-avi-load-balancer || vmware-avi-load-balancer --version

2. UPGRADE to 30.2.7 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade vmware-avi-load-balancer

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade vmware-avi-load-balancer

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 22.1.1 (Debian / Ubuntu)

apt-cache madison vmware-avi-load-balancer sudo apt install vmware-avi-load-balancer=<VERSION_BEFORE_22.1.1> sudo apt-mark hold vmware-avi-load-balancer

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list vmware-avi-load-balancer sudo dnf downgrade vmware-avi-load-balancer-<VERSION_BEFORE_22.1.1> sudo dnf versionlock add vmware-avi-load-balancer

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-47866?

vmware avi load balancer: upgrade to 30.2.7, 31.2.2. Exact commands for each OS are on this page.

Is CVE-2026-47866 being exploited?

CVE-2026-47866 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-47866 affect?

CVE-2026-47866 affects vmware avi load balancer. Severity is high (CVSS 8.3). VMware Avi Load Balancer contains an authorization bypass vulnerability. A malicious actor on the network can access a limited subset of the Avi Control Plane without proper authorization. Affected versions: 32.1.1 (fixed in 32.1.2) 31.1.1

How urgent is CVE-2026-47866?

Priority 37/100. High severity

Software pages

VMware vulnerabilities

Related CVEs

CVE-2026-47865 CRITICAL 9.8 UPGRADE VMware Avi Load Balancer contains an authentication bypass vulnerability
CVE-2026-47871 HIGH 8.8 UPGRADE VMware Avi Load Balancer contains a directory traversal vulnerability
CVE-2026-47867 HIGH 8.7 UPGRADE VMware Avi Load Balancer contains a remote code execution vulnerability
CVE-2026-47869 HIGH 8.7 UPGRADE VMware Avi Load Balancer contains a remote code execution vulnerability
CVE-2026-47870 HIGH 7.1 UPGRADE VMware Avi Load Balancer contains a privilege escalation vulnerability

References

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