How severe is CVE-2023-49646?

CVE-2023-49646 has a CVSS 3.x base score of 6.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability low.

Is CVE-2023-49646 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-49646?

CVE-2023-49646 primarily affects Zoom Meeting Software Development Kit. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-49646?

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

When was CVE-2023-49646 published?

CVE-2023-49646 was published on 2023-12-13 and last updated on 2026-06-17.

CVE-2023-49646

CVE-2023-49646 is a medium-severity vulnerability in Zoom Meeting Software Development Kit with a CVSS 3.x base score of 6.4. 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-287.

Key facts

Severity: Medium (CVSS 3.x base score 6.4)
EPSS exploit prediction: 0% (34th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Zoom Meeting Software Development Kit
Published: 2023-12-13
Last modified: 2026-06-17

Description

Improper authentication in some Zoom clients before version 5.16.5 may allow an authenticated user to conduct a denial of service via network access.

Frequently asked questions

What is CVE-2023-49646?: Improper authentication in some Zoom clients before version 5.16.5 may allow an authenticated user to conduct a denial of service via network access.
How severe is CVE-2023-49646?: CVE-2023-49646 has a CVSS 3.x base score of 6.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability low.
Is CVE-2023-49646 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-49646?: CVE-2023-49646 primarily affects Zoom Meeting Software Development Kit. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-49646?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-49646 published?: CVE-2023-49646 was published on 2023-12-13 and last updated on 2026-06-17.

References

https://www.zoom.com/en/trust/security-bulletin/ZSB-23062/

Affected products (8)

cpe:2.3:a:zoom:meeting_software_development_kit:*:*:*:*:*:*:*:*
cpe:2.3:a:zoom:video_software_development_kit:*:*:*:*:*:*:*:*
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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