6.1

CVE-2026-20233: cisco cisco webex meetings Cross-site Scripting

CVSS: 6.1v3.1MediumAnalyzed
Published 03-06-2026Last modified 03-06-2026
Open JSON

Vulnerability summary

CVE-2026-20233 is a medium (CVSS 6.1) Cross-site Scripting vulnerability in cisco cisco webex meetings. EPSS estimates a 0.18% chance of exploitation in the next 30 days, higher than 7.4% of scored vulnerabilities.

Overall risk
24/100
0100
Low · default modelHow is this calculated?
CVSS score
6.1/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.18%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 03-06-2026
    PublishedVulnerability first disclosed.
  2. 03-06-2026
    Last modifiedVulnerability information updated.

Description

A vulnerability in the web-based user interface of Cisco Webex Meetings could have allowed an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack. Cisco has addressed this vulnerability in the Webex Meetings service, and no customer action is needed. This vulnerability existed because of insufficient validation of user input. Prior to this vulnerability being addressed, an attacker could have exploited this vulnerability by persuading a user to follow a malicious link. A successful exploit could have allowed the attacker to execute arbitrary script code in the browser of the targeted user or access sensitive, browser-based information.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.18%

Chance of exploitation in the next 30 days

Percentile

7%

Versus all other CVEs

30-day change

0.00 pp

From 0.18% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.18%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Cisco2 products
  • cisco webex meetings39.7.7 | 39.9 | 40.4.10 | 39.6 | 40.6.2 | 39.8.2 | 39.8.4 | 40.1 | 39.11 | 39.7.4 | 39.9.1 | 40.4 | 40.6 | 39.7 | 39.8 | 39.8.3 | 40.2 | 39.10 | 42.6 | 42.7 | 42.8 | 42.9 | 42.10 | 42.11 | 42.12 | 43.1 | 43.2 | 43.3 | 43.4 | 43.4.1 | 43.4.2 | 43.5.0 | 43.6.0 | 43.6.1 | 43.7 | 43.8 | 43.9 | 43.10 | 43.11 | 43.12 | 44.1 | 44.2 | 44.3 | 44.4 | 44.5 | 44.6 | 44.7 | 44.8 | 44.9 | 44.10 | 44.11 | 44.12 | 45.1 | 45.2 | 45.3 | 45.4
  • webex_meetings39.6.0 | 39.7.0 | 39.7.4 | 39.7.7 | 39.8.0 | 39.8.2 | 39.8.3 | 39.8.4 | 39.9.0 | 39.9.1 | 39.10.0 | 39.11.0 | 40.1.0 | 40.2.0 | 40.4.0 | 40.4.10 | 40.6.0 | 40.6.2 | 42.6.0 | 42.7.0 | 42.8.0 | 42.9.0 | 42.10.0 | 42.11.0 | 42.12.0 | 43.1.0 | 43.2.0 | 43.3.0 | 43.4.0 | 43.4.1 | 43.4.2 | 43.5.0 | 43.6.0 | 43.6.1 | 43.7.0 | 43.8.0 | 43.9.0 | 43.10.0 | 43.11.0 | 43.12.0 | 44.1.0 | 44.2.0 | 44.3.0 | 44.4.0 | 44.5.0 | 44.6.0 | 44.7.0 | 44.8.0 | 44.9.0 | 44.10.0 | 44.11.0 | 44.12.0 | 45.1.0 | 45.2.0 | 45.3.0 | 45.4.0

1 vendor · 2 products

References

1 links