What is CVE-2023-39199?

CVE-2023-39199 is a medium-severity vulnerability in Zoom Meetings, classified under Missing Cryptographic Step. CVSS score: 4.9/10. Published 2023-11-14.

How severe is CVE-2023-39199?

Medium severity. CVSS v3 base score is 4.9 out of 10.

Vulnerability in Zoom Meetings

CVE-2023-39199

Cryptographic issues with In-Meeting Chat for some Zoom clients may allow a privileged user to conduct an information disclosure via network access.

Published 2023-11-14 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.9 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.006 (47.6th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 48th percentile — 47.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

Zoom Meetings
Zoom Rooms
Zoom Virtual Desktop Infrastructure
Zoom
Zoom Video Communications, Inc. Clients — versions see references

Weakness classification (CWE)

CWE-325 — Missing Cryptographic Step

References

explore.zoom.us/en/trust/security/security-bulletin/ (Vendor Advisory)

Frequently asked questions

What is CVE-2023-39199?: CVE-2023-39199 is a medium-severity vulnerability in Zoom Meetings, classified under Missing Cryptographic Step. CVSS score: 4.9/10. Published 2023-11-14.
How severe is CVE-2023-39199?: Medium severity. CVSS v3 base score is 4.9 out of 10.