CVE-2022-28750Network attack vector

Unauthenticated crash via malformed STUN error codes

Published Aug 11, 2022 · Updated Sep 16, 2024

Stack-based buffer overflow in Zoom Meeting Connector Zone Controller before 4.8.20220419.112 allows remote attackers to crash the service. The Zone Controller improperly parses attacker-controlled STUN error codes, corrupting stack memory when processing a malformed response. No authentication or user interaction is required; builds before 4.8.12.20211115 also allow arbitrary code execution.

CVSS severity7.5
High
EPSS probability1.96%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack-based buffer overflow in Zoom Meeting Connector Zone Controller before 4.8.20220419.112 allows remote attackers to crash the service. The Zone Controller improperly parses attacker-controlled STUN error codes, corrupting stack memory when processing a malformed response. No authentication or user interaction is required; builds before 4.8.12.20211115 also allow arbitrary code execution.

The record

CVE
CVE-2022-28750
Published
Aug 11, 2022
Updated
Sep 16, 2024
Vendor
Zoom Video Communications, Inc.
Product
Zoom Meeting Connector Zone Controller
Classifications
CWE-121, CWE-787, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 11, 2022CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 2024Record 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 <4.8.20220419.112

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Zoom Video Communications, Inc. · Zoom Meeting Connector Zone Controllerversion=unspecified <4.8.20220419.112

Published CVSS scores

9.8National Institute of Standards and TechnologyCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5Zoom Video Communications, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-121Stack-based Buffer Overflow
CWE-787Out-of-bounds Write
T1499Endpoint Denial of Service

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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