CVE-2025-27443: Insecure default variable initialization in some Zoom Workplace Apps for Windows may allow an authenticated us

Q: How do I fix CVE-2025-27443?

meeting software development kit: upgrade to 6.3.10; rooms: upgrade to 6.4.0; rooms controller: upgrade to 6.4.0. Exact commands for each OS are on this page.

Q: Is CVE-2025-27443 being exploited?

CVE-2025-27443 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-2025-27443 affect?

CVE-2025-27443 affects meeting software development kit, rooms, rooms controller. Severity is low (CVSS 2.8). Insecure default variable initialization in some Zoom Workplace Apps for Windows may allow an authenticated user to conduct a loss of integrity via local access.

Q: How urgent is CVE-2025-27443?

Priority 11/100. No elevated risk signals yet.

Routine

LOW 2.8UPGRADEUPGRADEUPGRADE

CVE-2025-27443 is a low-severity flaw (CVSS 2.8) affecting meeting software development kit, rooms, rooms controller. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Insecure default variable initialization in some Zoom Workplace Apps for Windows may allow an authenticated user to conduct a loss of integrity via local access.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	2.8 (Low)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.2% (top 94%)
CISA exploited list	No
Weakness	CWE-1188
Published	2025-04-08
Last modified	2026-06-17

Publisher (CNA): Zoom Video Communications, Inc. · Vendor: zoom

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

Am I affected?

Timeline

2025-04-08 17:15 UTCPublished CVE record published
2026-06-17 09:03 UTCUpdated Record last modified

zoom meeting software development kit UPGRADE

Affected: < 6.3.10

Fixed in: 6.3.10

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy meeting-software-development-kit || rpm -q meeting-software-development-kit || meeting-software-development-kit --version

2. UPGRADE to 6.3.10 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade meeting-software-development-kit

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade meeting-software-development-kit

Note

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

zoom rooms UPGRADE

Affected: < 6.4.0

Fixed in: 6.4.0

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 6.4.0 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade rooms

Note

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

zoom rooms controller UPGRADE

Affected: < 6.4.0

Fixed in: 6.4.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy rooms-controller || rpm -q rooms-controller || rooms-controller --version

2. UPGRADE to 6.4.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade rooms-controller

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade rooms-controller

Note

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

zoom workplace desktop UPGRADE

Affected: < 6.3.10

Fixed in: 6.3.10

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy workplace-desktop || rpm -q workplace-desktop || workplace-desktop --version

2. UPGRADE to 6.3.10 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade workplace-desktop

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade workplace-desktop

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-2025-27443?

meeting software development kit: upgrade to 6.3.10; rooms: upgrade to 6.4.0; rooms controller: upgrade to 6.4.0. Exact commands for each OS are on this page.

Is CVE-2025-27443 being exploited?

CVE-2025-27443 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-2025-27443 affect?

CVE-2025-27443 affects meeting software development kit, rooms, rooms controller. Severity is low (CVSS 2.8). Insecure default variable initialization in some Zoom Workplace Apps for Windows may allow an authenticated user to conduct a loss of integrity via local access.

How urgent is CVE-2025-27443?

Priority 11/100. No elevated risk signals yet.

Software pages

Windows vulnerabilities · Zoom vulnerabilities

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References

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