What is CVE-2023-39208?

CVE-2023-39208 is a medium-severity vulnerability in Zoom, classified under Cross-site Scripting. CVSS score: 6.5/10. Published 2023-09-12.

How severe is CVE-2023-39208?

Medium severity. CVSS v3 base score is 6.5 out of 10.

XSS in Zoom

CVE-2023-39208

Improper input validation in Zoom Desktop Client for Linux before version 5.15.10 may allow an unauthenticated user to conduct a denial of service via network access.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2023-09-12 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L.

EPSS exploit prediction

EPSS: 0.006 (48.6th percentile), scored 2026-10-03.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 49th percentile — 48.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.006 · change: +0.001

Affected products

Zoom
Zoom Video Communications, Inc. Desktop Client For Linux — versions before version 5.15.10

Weakness classification (CWE)

References

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

Frequently asked questions

What is CVE-2023-39208?: CVE-2023-39208 is a medium-severity vulnerability in Zoom, classified under Cross-site Scripting. CVSS score: 6.5/10. Published 2023-09-12.
How severe is CVE-2023-39208?: Medium severity. CVSS v3 base score is 6.5 out of 10.