How severe is CVE-2023-39204?

CVE-2023-39204 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2023-39204 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-39204?

CVE-2023-39204 primarily affects Zoom Meetings. In total, 20 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-39204?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2023-39204 published?

CVE-2023-39204 was published on 2023-11-14 and last updated on 2026-06-17.

CVE-2023-39204

CVE-2023-39204 is a medium-severity vulnerability in Zoom Meetings with a CVSS 3.x base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-120.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
EPSS exploit prediction: 1% (61st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-120
Affected product: Zoom Meetings
Published: 2023-11-14
Last modified: 2026-06-17

Description

Buffer overflow in some Zoom clients may allow an unauthenticated user to conduct a denial of service via network access.

Frequently asked questions

What is CVE-2023-39204?: Buffer overflow in some Zoom clients may allow an unauthenticated user to conduct a denial of service via network access.
How severe is CVE-2023-39204?: CVE-2023-39204 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2023-39204 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-39204?: CVE-2023-39204 primarily affects Zoom Meetings. In total, 20 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-39204?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-39204 published?: CVE-2023-39204 was published on 2023-11-14 and last updated on 2026-06-17.

References

https://explore.zoom.us/en/trust/security/security-bulletin/

Affected products (20)

cpe:2.3:a:zoom:meetings:*:*:*:*:*:android:*:*
cpe:2.3:a:zoom:meetings:*:*:*:*:*:iphone_os:*:*
cpe:2.3:a:zoom:meetings:*:*:*:*:*:linux:*:*
cpe:2.3:a:zoom:meetings:*:*:*:*:*:macos:*:*
cpe:2.3:a:zoom:meetings:*:*:*:*:*:windows:*:*
cpe:2.3:a:zoom:rooms:*:*:*:*:*:android:*:*
cpe:2.3:a:zoom:rooms:*:*:*:*:*:ipad_os:*:*
cpe:2.3:a:zoom:rooms:*:*:*:*:*:macos:*:*
cpe:2.3:a:zoom:rooms:*:*:*:*:*:windows:*:*
cpe:2.3:a:zoom:video_software_development_kit:*:*:*:*:*:android:*:*
cpe:2.3:a:zoom:video_software_development_kit:*:*:*:*:*:iphone_os:*:*
cpe:2.3:a:zoom:video_software_development_kit:*:*:*:*:*:linux:*:*
cpe:2.3:a:zoom:video_software_development_kit:*:*:*:*:*:macos:*:*
cpe:2.3:a:zoom:video_software_development_kit:*:*:*:*:*:windows:*:*
cpe:2.3:a:zoom:virtual_desktop_infrastructure:*:*:*:*:*:*:*:*
cpe:2.3:a:zoom:zoom:*:*:*:*:*:android:*:*
cpe:2.3:a:zoom:zoom:*:*:*:*:*:iphone_os:*:*
cpe:2.3:a:zoom:zoom:*:*:*:*:*:linux:*:*
cpe:2.3:a:zoom:zoom:*:*:*:*:*:macos:*:*
cpe:2.3:a:zoom:zoom:*:*:*:*:*:windows:*:*

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