What is CVE-2022-20820?

CVE-2022-20820 is a medium-severity vulnerability in Cisco Webex Meetings, classified under Improper Restriction of Rendered UI Layers or Frames (Clickjacking). CVSS score: 5.4/10. Published 2022-08-10.

How severe is CVE-2022-20820?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in Cisco Webex Meetings

CVE-2022-20820

Multiple vulnerabilities in the web interface of Cisco Webex Meetings could allow a remote attacker to conduct a cross-site scripting (XSS) attack or a frame hijacking attack against a user of the web interface. For more information about these vulnerabilities, see the Details section of this advisory.

Published 2022-08-10 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.005 (42.3th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 42nd percentile — 42.3% 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: 0.005 · change: 0.000

Affected products

Weakness classification (CWE)

References

tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-webex-xs… (vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2022-20820?: CVE-2022-20820 is a medium-severity vulnerability in Cisco Webex Meetings, classified under Improper Restriction of Rendered UI Layers or Frames (Clickjacking). CVSS score: 5.4/10. Published 2022-08-10.
How severe is CVE-2022-20820?: Medium severity. CVSS v3 base score is 5.4 out of 10.