CVE-2019-13450: In the Zoom Client through 4.4.4 and RingCentral 7.0.136380.0312 on macOS, remote attackers can force a user t

Q: How do I fix CVE-2019-13450?

ringcentral: downgrade or apply the listed mitigation; zoom: upgrade to newer than 4.4.4. Exact commands for each OS are on this page.

Q: Is CVE-2019-13450 being exploited?

CVE-2019-13450 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2019-13450 affect?

CVE-2019-13450 affects ringcentral, zoom. Severity is medium (CVSS 6.5). In the Zoom Client through 4.4.4 and RingCentral 7.0.136380.0312 on macOS, remote attackers can force a user to join a video call with the video camera active. This occurs because any web site can interact with the Zoom web server on localh

Q: How urgent is CVE-2019-13450?

Priority 50/100. Public exploit reference

This month

MEDIUM 6.5DOWNGRADEUPGRADE

CVE-2019-13450 is a medium-severity flaw (CVSS 6.5) affecting ringcentral, zoom. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

In the Zoom Client through 4.4.4 and RingCentral 7.0.136380.0312 on macOS, remote attackers can force a user to join a video call with the video camera active. This occurs because any web site can interact with the Zoom web server on localhost port 19421 or 19424. NOTE: a machine remains vulnerable if the Zoom Client was installed in the past and then uninstalled. Blocking exploitation requires additional steps, such as the ZDisableVideo preferen

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	3.5% (top 11%)
CISA exploited list	No
Weakness	CWE-862
Published	2019-07-09
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: ringcentral · zoom

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

Am I affected?

Timeline

2019-07-09 06:15 UTCPublished CVE record published
2026-06-17 02:16 UTCUpdated Record last modified

ringcentral ringcentral DOWNGRADE

Affected: 7.0.136380.0312

Fixed in: no fixed release known

Safe to downgrade to: a release before 7.0.136380.0312

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 7.0.136380.0312 (Debian / Ubuntu)

apt-cache madison ringcentral sudo apt install ringcentral=<VERSION_BEFORE_7.0.136380.0312> sudo apt-mark hold ringcentral

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

dnf --showduplicates list ringcentral sudo dnf downgrade ringcentral-<VERSION_BEFORE_7.0.136380.0312> sudo dnf versionlock add ringcentral

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.

zoom zoom UPGRADE

Affected: <= 4.4.4

Fixed in: newer than 4.4.4

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 4.4.4 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade zoom

Note

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

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-2019-13450?

ringcentral: downgrade or apply the listed mitigation; zoom: upgrade to newer than 4.4.4. Exact commands for each OS are on this page.

Is CVE-2019-13450 being exploited?

CVE-2019-13450 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-2019-13450 affect?

CVE-2019-13450 affects ringcentral, zoom. Severity is medium (CVSS 6.5). In the Zoom Client through 4.4.4 and RingCentral 7.0.136380.0312 on macOS, remote attackers can force a user to join a video call with the video camera active. This occurs because any web site can interact with the Zoom web server on localh

How urgent is CVE-2019-13450?

Priority 50/100. Public exploit reference

Software pages

macOS vulnerabilities · Zoom vulnerabilities

References

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