CVE-2026-45562: FreePBX is an open source IP PBX

Routine

HIGH 7.2UPGRADE

CVE-2026-45562 is a high-severity flaw (CVSS 7.2) affecting freepbx. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

FreePBX is an open source IP PBX. Prior to versions 16.0.4 and 17.0.6, the FreePBX Music on Hold (MoH) module contains a critical security flaw that allows authenticated attackers to execute arbitrary system commands with the privileges of the Asterisk service. Authentication with an existing FreePBX administrator account is required. The root cause lies in the fact that the module accepts a POST parameter that defines a custom Asterisk applicati

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.2 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	None
EPSS exploit chance	0.4% (top 70%)
CISA exploited list	No
Weakness	CWE-78
Published	2026-09-28
Last modified	2026-10-16

Publisher (CNA): GitHub, Inc. · Vendor: sangoma

Last updated 2026-10-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-09-28 18:17 UTCPublished CVE record published
2026-10-16 18:22 UTCUpdated Record last modified

sangoma freepbx UPGRADE

Affected: >= 16.0 and < 16.0.4 · >= 17.0 and < 17.0.6

Fixed in: 16.0.4, 17.0.6

Safe to downgrade to: a release before 16.0

1. Check installed version

apt-cache policy freepbx || rpm -q freepbx || freepbx --version

2. UPGRADE to 16.0.4 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade freepbx

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade freepbx

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 16.0 (Debian / Ubuntu)

apt-cache madison freepbx sudo apt install freepbx=<VERSION_BEFORE_16.0> sudo apt-mark hold freepbx

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

dnf --showduplicates list freepbx sudo dnf downgrade freepbx-<VERSION_BEFORE_16.0> sudo dnf versionlock add freepbx

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-2026-45562?

freepbx: upgrade to 16.0.4, 17.0.6. Exact commands for each OS are on this page.

Is CVE-2026-45562 being exploited?

CVE-2026-45562 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-2026-45562 affect?

CVE-2026-45562 affects freepbx. Severity is high (CVSS 7.2). FreePBX is an open source IP PBX. Prior to versions 16.0.4 and 17.0.6, the FreePBX Music on Hold (MoH) module contains a critical security flaw that allows authenticated attackers to execute arbitrary system commands with the privileges of

How urgent is CVE-2026-45562?

Priority 33/100. High severity

Related CVEs

CVE-2026-54674 HIGH 8.8 UPGRADE FreePBX is an open source IP PBX
CVE-2026-54675 HIGH 8.8 UPGRADE FreePBX is an open source IP PBX
CVE-2026-54708 HIGH 8.8 UPGRADE FreePBX is an open source IP PBX
CVE-2026-54710 HIGH 8.8 UPGRADE FreePBX is an open source IP PBX
CVE-2026-75600 HIGH 8.8 UPGRADE FreePBX is an open source IP PBX

References

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