CVE-2022-28766

Local code execution via DLL injection

Published Nov 17, 2022 · Updated Apr 29, 2025

DLL injection in 32-bit Zoom Windows clients before 5.12.6 allows local users to run arbitrary code in the client process. Zoom has not disclosed the affected DLL-loading locus or the operation that accepts an attacker-controlled library path. A low-privileged local account is required, and execution is bounded to the security context of the Zoom client.

CVSS severity8.1
High
EPSS probability0.53%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

DLL injection in 32-bit Zoom Windows clients before 5.12.6 allows local users to run arbitrary code in the client process. Zoom has not disclosed the affected DLL-loading locus or the operation that accepts an attacker-controlled library path. A low-privileged local account is required, and execution is bounded to the security context of the Zoom client.

The record

CVE
CVE-2022-28766
Published
Nov 17, 2022
Updated
Apr 29, 2025
Vendor
Zoom Video Communications, Inc.
Product
Zoom Rooms for Conference Room for Windows
Classifications
CWE-427, CWE-94, T1574.001
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 17, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 29, 2025Record 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=unspecified <5.12.6

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Zoom Video Communications, Inc. · Zoom Rooms for Conference Room for Windowsversion=unspecified <5.12.6
Zoom Video Communications, Inc. · Zoom VDI Windows Meeting Clientversion=unspecified <5.12.6
Zoom Video Communications, Inc. · Zoom Client for Meetings for Windowsversion=unspecified <5.12.6

Published CVSS scores

7.3NIST National Vulnerability DatabaseCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
8.1Zoom Security Bulletin ZSB-22027CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:L
3.3Zoom Video Communications, Inc. CNACVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-427Uncontrolled Search Path Element
CWE-94Improper Control of Generation of Code ('Code Injection')
T1574.001DLL Search Order Hijacking

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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