CVE-2020-3345

mediumpriority · track · 17EPSS 0.012 · 68 %ileEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.21% (68th) EPSS

CVSS 4.3 · medium

Is it mine?

8 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · cisco_csaf

EPSS · scored 2026-10-27

A vulnerability in certain web pages of Cisco Webex Meetings and Cisco Webex Meetings Server could allow an unauthenticated, remote attacker to modify a web page in the context of a browser. The vulnerability is due to improper checks on parameter values within affected pages. An attacker could exploit this vulnerability by persuading a user to follow a crafted link that is designed to pass HTML code into an affected parameter. A successful exploit could allow the attacker to alter the contents of a web page to redirect the user to potentially malicious web sites, or the attacker could leverage this vulnerability to conduct further client-side attacks.

remediations

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

A vendor fix is available.

FixedCisco WebEx Meetings Servercisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
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.

4.3

010

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

v2.04.3mediumAV:N/AC:M/Au:N/C:N/I:P/A:Nprimary · NVD / NIST USexploitability 8.6 · impact 2.9

v3.14.3mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:Nprimary · NVD / NIST USexploitability 2.8 · impact 1.4

v3.04.3mediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:Nsecondary · ENISA EU

v3.04.3mediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:Nsecondary · psirt@cisco.com USexploitability 2.8 · impact 1.4

v3.04.3mediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:Nsecondary · Cisco PSIRT US

v3.14.3mediumAV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:Nsecondary · FSTEC (BDU) RU

v3.14mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N/E:Usecondary · CVSS-BT (t0sche)

ssvc

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

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-20USprimaryCWE-20US

affected products (8)

Products and version ranges known to be affected.

Cisco Cisco WebEx Meetings Serverall versionscisco_csafUS
Cisco Cisco Webex Meetingsall versionscisco_csafUS
Cisco Cisco WebEx Meetings Server≤ n/aenisa_euvdEU
Cisco Systems Inc. Cisco WebEx Meetings Server≤ 4.0MR3fstec_bduRU
Cisco Systems Inc. Cisco Webex Meetings≤ 40.6.0fstec_bduRU
cisco webex meetings< 40.6.0nvdUScpe:2.3:a:cisco:webex_meetings:*:*:*:*:*:*:*:*
cisco webex meetings server≤ 4.0nvdUScpe:2.3:a:cisco:webex_meetings_server:*:*:*:*:*:*:*:*
cisco webex meetings server= 4.0nvdUScpe:2.3:a:cisco:webex_meetings_server:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

cisco-sa-webex-html-BJ4Y9tXCisco Webex Meetings and Cisco Webex Meetings Server HTML Injection Vulnerability2020-07-15csaf · cisco_csafUS
A vulnerability in certain web pages of Cisco Webex Meetings and Cisco Webex Meetings Server could allow an unauthenticated, remote attacker to modify a web page in the context of a browser. The vulnerability is due to improper checks on parameter values within affected pages. An attacker could exploit this vulnerability by persuading a user to follow a crafted link that is designed to pass HTML code into an affected parameter. A successful exploit could allow the attacker to alter the contents of a web page to redirect the user to potentially malicious web sites, or the attacker could leverage this vulnerability to conduct further client-side attacks. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. This advisory is available at the following link: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-webex-html-BJ4Y9tX ["https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-webex-html-BJ4Y9tX"]

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cisco_csaf nvd NVD CVE.org MITRE

published 2020-07-16modified 2026-06-17

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references (6)

External citations — patches, advisories, analysis.

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