Is CVE-2023-49646 in the CISA KEV catalog?

No. CVE-2023-49646 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2023-49646?

CVE-2023-49646 has a CVSS v3 base score of 6.4 (MEDIUM).

What is the EPSS score for CVE-2023-49646?

CVE-2023-49646 has an EPSS score of 0.40% (32th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2023-49646?

Upgrade meeting software development kit to 5.16.5 or later. Fixes are available for 4 affected products.

CVE & CISA-KEV Catalog

CVE-2023-49646

MEDIUM

6.4

CVSS v3

NVD

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.

CWE-347 CWE-287Improper Authentication

How to fix

Remediation Available

meeting software development kitNVD

Affected:< 5.16.5Fixed in:5.16.5CVE-2023-49646derived from NVD

video software development kitNVD

Affected:< 5.16.5Fixed in:5.16.5CVE-2023-49646derived from NVD

virtual desktop infrastructureNVD

Affected:>= 5.15.0, < 5.15.12Fixed in:5.15.12CVE-2023-49646derived from NVD

zoomNVD

Affected:< 5.16.5Fixed in:5.16.5CVE-2023-49646derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeChanged

Impact

ConfidentialityNone

IntegrityLow

AvailabilityLow

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:L

Exploit Intelligence

0.40%probability of exploitation in 30 days

32ndpercentile

Low risk: more likely to be exploited than 32% of all known CVEs.

References

Vendor Advisory1

zoom.com

Related Vulnerabilities

Other CWE-347 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2018-16042	Medium	6.5	82%	-	-
CVE-2025-59718	Critical	9.8	66%	KEV	Fix
CVE-2025-25292	Critical	9.8	64%	-	Fix
CVE-2021-22160	Critical	9.8	53%	-	Fix
CVE-2013-3900	Medium	5.5	45%	KEV	-
CVE-2018-0114	High	7.5	43%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.