CVE-2016-2364: The Chrome HUDweb plugin before 2016-05-05 for Fonality (previously trixbox Pro) 12.6 through 14.1i uses the s

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HIGH 7.5REMOTEUPGRADEDOWNGRADE

CVE-2016-2364 is a high-severity flaw (CVSS 7.5) affecting hud web, fonality. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The Chrome HUDweb plugin before 2016-05-05 for Fonality (previously trixbox Pro) 12.6 through 14.1i uses the same hardcoded private key across different customers' installations, which allows remote attackers to defeat cryptographic protection mechanisms by leveraging knowledge of this key from another installation.

Why this priority

High severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	2.3% (top 17%)
CISA exploited list	No
Weakness	CWE-310
Published	2016-06-20
Last modified	2026-06-17

Publisher (CNA): CERT/CC · Vendor: fonality

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2016-06-20 01:59 UTCPublished CVE record published
2026-06-17 00:43 UTCUpdated Record last modified

fonality hud web UPGRADE

Affected: <= 1.4.1

Fixed in: newer than 1.4.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy hud-web || rpm -q hud-web || hud-web --version

2. UPGRADE to newer than 1.4.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade hud-web

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade hud-web

Note

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

fonality fonality DOWNGRADE

Affected: 12.6 · 12.8 · 14.1i

Fixed in: no fixed release known

Safe to downgrade to: a release before 12.6

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 12.6 (Debian / Ubuntu)

apt-cache madison fonality sudo apt install fonality=<VERSION_BEFORE_12.6> sudo apt-mark hold fonality

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list fonality sudo dnf downgrade fonality-<VERSION_BEFORE_12.6> sudo dnf versionlock add fonality

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-2016-2364?

hud web: upgrade to newer than 1.4.1; fonality: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2016-2364 being exploited?

CVE-2016-2364 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-2016-2364 affect?

CVE-2016-2364 affects hud web, fonality. Severity is high (CVSS 7.5). The Chrome HUDweb plugin before 2016-05-05 for Fonality (previously trixbox Pro) 12.6 through 14.1i uses the same hardcoded private key across different customers' installations, which allows remote attackers to defeat cryptographic protect

How urgent is CVE-2016-2364?

Priority 52/100. High severity; Remotely exploitable, no login, no user action

Software pages

Google Chrome vulnerabilities

References

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