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Zoom CVE-2026-22844

CRITICAL
OS Command Injection (CWE-78)
2026-01-20 security@zoom.us
Zoom RCE Command Injection
9.9
CVSS 3.1 · NVD
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Severity by source

NVD PRIMARY
9.9 CRITICAL
AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

2
Analysis Generated
Mar 12, 2026 - 21:54 vuln.today
CVE Published
Jan 20, 2026 - 14:16 nvd
CRITICAL 9.9

DescriptionCVE.org

A Command Injection vulnerability in Zoom Node Multimedia Routers (MMRs) before version 5.2.1716.0 may allow a meeting participant to conduct remote code execution of the MMR via network access.

AnalysisAI

Zoom Node Multimedia Routers (MMRs) before version 5.2.1716.0 have a CVSS 9.9 command injection vulnerability allowing meeting participants to execute OS commands on the router.

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Authenticate as meeting participant
Exploit
Send crafted input to MMR interface
Execution
Inject OS commands in parameter
Impact
Execute arbitrary code on MMR
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Vulnerability AssessmentAI

Exploitation Zoom Node Multimedia Router (MMR) version before 5.2.1716.0 with meeting participant access enabled. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment CVSS 9.9 — Zoom MMRs handle multimedia routing for Zoom meetings. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario A meeting participant sends a crafted request through the Zoom client that injects OS commands on the MMR, gaining a shell on the routing server and potentially intercepting audio/video streams from multiple meetings.
Remediation Update Zoom MMRs to version 5.2.1716.0 or later immediately. … Detailed patch versions, workarounds, and compensating controls in full report.
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Recommended ActionAI

Within 24 hours: Identify all affected systems and apply vendor patches immediately. …

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Threat intelligence, references, and detailed analysis are available after sign-in.

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CVE-2026-22844 vulnerability details – vuln.today
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