CVE-2024-42438Network attack vector

Authenticated denial of service via heap buffer overflow

Published Aug 14, 2024 · Updated Aug 16, 2024

Heap buffer overflow in affected Zoom Workplace clients and SDKs allows remote authenticated users to interrupt service over a network. Zoom identifies heap-resident memory as the overwritten locus but has not published the responsible component, operation, or triggering input. A valid Zoom session is required; exploitation affects availability by interrupting the vulnerable app, SDK host, room client, or controller.

CVSS severity6.5
Medium
EPSS probability0.57%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap buffer overflow in affected Zoom Workplace clients and SDKs allows remote authenticated users to interrupt service over a network. Zoom identifies heap-resident memory as the overwritten locus but has not published the responsible component, operation, or triggering input. A valid Zoom session is required; exploitation affects availability by interrupting the vulnerable app, SDK host, room client, or controller.

The record

CVE
CVE-2024-42438
Published
Aug 14, 2024
Updated
Aug 16, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-787, CWE-122, T1499.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 14, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.5NISTCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
6.5Zoom Communications Inc.CVSS:3.1/AV:N/AC:L/PR:L/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write
CWE-122Heap-based Buffer Overflow
T1499.004Application or System Exploitation

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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