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01 Record

CVE-2023-39206

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

LowPUBLISHEDCNA: Zoom
CNA base score3.7 CVSS v3.xCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

02 Description

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

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
1.13% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 66.3% of scored records. A rank, not a probability.
NVD base score
7.5 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD analysis status
Modified. NVD last modified this record on 2026-06-17.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2023-11-14 23:02Z2 YR AGO
Last updated
2024-08-29 15:45Z2 YR AGO
Reserved
2023-07-25
Assigning CNA
Zoom
Record state
PUBLISHED
Severity
Low (CVSS 3.7)
CNA CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
Weaknesses
  • CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')Base
Data version
5.1
Document digest
583aad2373e36f6b75c6ae59cb7d6c0769a685fc5d2894bc22280aeaaea24aa6

05 Affected products

VendorProductVersionsPlatforms
Zoom Video Communications, Inc.Zoom Clientssee referencesWindows, MacOS, Linux, iOS, Android

06 References