Cisco Webex Meetings Web UI Vulnerabilities

published 2023-04-05 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-24313

cvss: 5.4; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.5%; EPSS 0.5% chance of exploitation in 30 days, percentile 39%
public exploits: 0; none known

Multiple vulnerabilities in the web interface of Cisco Webex Meetings could allow an authenticated, remote attacker to conduct a stored cross-site scripting (XSS) attack or upload arbitrary files as recordings. For more information about these vulnerabilities, see the Details section of this advisory.

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 2 y ago (2024-10-25)

Exploit prediction

0.45% chance of exploitation in the next 30 days, higher than 39% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	5.4	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
NVD	3.1	6.5	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Affected products

Cisco Cisco Webex Meetings

Classification

Weakness

CWE-20 Improper Input Validation
CWE-434 Unrestricted Upload of File with Dangerous Type

References

sec.cloudapps.cisco.com /security/center/content/CiscoSecurityAdvisory/cisco-sa-wbx-sxss-fupl-64uHbcm5
vendor-advisory

Sources

CVE List CVE-2023-20134
NVD CVE-2023-20134

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary