CVE-2026-22844Network attack vector

Authenticated code execution via undisclosed command injection

Published Jan 20, 2026 · Updated Jan 20, 2026

Command injection in Zoom Node MMRs before 5.2.1716.0 allows remote authenticated users to execute code over a network. Zoom identifies the Multimedia Router command-injection class but has not disclosed the input field, code path, or command-construction error. A meeting participant must reach the MMR over the network; successful exploitation executes commands on the appliance, affecting its data and availability.

CVSS severity9.9
Critical
EPSS probability13.46%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command injection in Zoom Node MMRs before 5.2.1716.0 allows remote authenticated users to execute code over a network. Zoom identifies the Multimedia Router command-injection class but has not disclosed the input field, code path, or command-construction error. A meeting participant must reach the MMR over the network; successful exploitation executes commands on the appliance, affecting its data and availability.

The record

CVE
CVE-2026-22844
Published
Jan 20, 2026
Updated
Jan 20, 2026
Vendor
Zoom Video Communications, Inc.
Product
Zoom Node
Classifications
CWE-78, T1059
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 20, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 20, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <5.2.1716.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Zoom Video Communications, Inc. · Zoom Nodeversion=0 <5.2.1716.0

Published CVSS scores

9.9Zoom Communications, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1059Command and Scripting Interpreter

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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