CVE-2023-20133

mediumpriority · track · 22EPSS 0.006 · 51 %ileDEEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.64% (51st) EPSS

CVSS 5.4 · medium

Is it mine?

67 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

A vulnerability in the web interface of Cisco Webex Meetings could allow an authenticated, remote attacker to conduct a stored cross-site scripting (XSS) attack against a user of the interface. This vulnerability exists because of insufficient validation of user-supplied input in Webex Events (classic) programs, email templates, and survey questions. An attacker could exploit this vulnerability by persuading a user to click a malicious link. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected interface or access sensitive, browser-based information.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

FixedCisco Webex Meetingscisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com

cvss

Technical severity, 0–10. One row per scoring source.

5.4

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.15.4mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:Nprimary · NVD / NIST USexploitability 2.3 · impact 2.7

v3.15.4mediumAV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:Nsecondary · FSTEC (BDU) RU

v3.15.4mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:Nsecondary · ENISA EU

v3.15.4mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:Nsecondary · psirt@cisco.com USexploitability 2.3 · impact 2.7

v3.15mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N/E:Usecondary · CVSS-BT (t0sche)

v3.15.4mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:Nsecondary · Cisco PSIRT US

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-79USprimaryCWE-79US

affected products (67)

Products and version ranges known to be affected.

Cisco WebEx meetingsall versionscert_bundDEcpe:/a:cisco:webex:meetings
Cisco Cisco Webex Meetingsall versionscisco_csafUS
Cisco Cisco Webex Meetings≤ 39.6enisa_euvdEU
Cisco Cisco Webex Meetings≤ 40.1enisa_euvdEU
Cisco Cisco Webex Meetings≤ 42.6enisa_euvdEU
Cisco Cisco Webex Meetings≤ 43.5.0enisa_euvdEU
Cisco Cisco Webex Meetings≤ 43.4enisa_euvdEU
Cisco Cisco Webex Meetings≤ 40.4enisa_euvdEU
Cisco Cisco Webex Meetings≤ 39.11enisa_euvdEU
Cisco Cisco Webex Meetings≤ 40.4.10enisa_euvdEU
Cisco Cisco Webex Meetings≤ 43.4.1enisa_euvdEU
Cisco Cisco Webex Meetings≤ 39.8enisa_euvdEU
Cisco Cisco Webex Meetings≤ 39.9.1enisa_euvdEU
Cisco Cisco Webex Meetings≤ 39.7.4enisa_euvdEU
Cisco Cisco Webex Meetings≤ 39.9enisa_euvdEU
Cisco Cisco Webex Meetings≤ 39.7enisa_euvdEU
Cisco Cisco Webex Meetings≤ 43.1enisa_euvdEU
Cisco Cisco Webex Meetings≤ 39.8.2enisa_euvdEU
Cisco Cisco Webex Meetings≤ 42.8enisa_euvdEU
Cisco Cisco Webex Meetings≤ 40.2enisa_euvdEU

showing 20 of 67

advisories (2)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2023-1668Cisco WebEx Meetings: Mehrere SchwachstellenDeutsch2023-07-05csaf · cert_bundDE
Ein entfernter, authentisierter oder anonymer Angreifer kann mehrere Schwachstellen in Cisco WebEx Meetings ausnutzen, um einen Cross-Site Scripting Angriff durchzuführen, Dateien zu manipulieren oder Informationen offenzulegen.
cisco-sa-sxsscsrf-2L24bBx6Cisco Webex Meetings Web UI Vulnerabilities2023-07-05csaf · cisco_csafUS
Multiple vulnerabilities in the web UI of Cisco Webex Meetings could allow a remote attacker to conduct stored cross-site scripting (XSS) or cross-site request forgery (CSRF) attacks. For more information about these vulnerabilities, see the Details ["#details"] section of this advisory. Cisco has released software updates that address these vulnerabilities. There are no workarounds that address these vulnerabilities.

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cert_bund cisco_csaf NVD CVE.org MITRE

published 2023-07-07modified 2026-06-17

related (53,012)

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+53007 more

references (5)

External citations — patches, advisories, analysis.

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