How severe is CVE-2020-3502?

CVE-2020-3502 has a CVSS 3.x base score of 4.1, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2020-3502 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-3502?

CVE-2020-3502 primarily affects Cisco Webex Meetings. In total, 9 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-3502?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2020-3502 published?

CVE-2020-3502 was published on 2020-08-17 and last updated on 2026-06-17.

CVE-2020-3502

CVE-2020-3502 is a medium-severity vulnerability in Cisco Webex Meetings with a CVSS 3.x base score of 4.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

Severity: Medium (CVSS 3.x base score 4.1)
CVSS v2: 3.5
EPSS exploit prediction: 1% (59th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Cisco Webex Meetings
Published: 2020-08-17
Last modified: 2026-06-17

Description

Multiple vulnerabilities in the user interface of Cisco Webex Meetings Desktop App could allow an authenticated, remote attacker to obtain restricted information from other Webex users. These vulnerabilities are due to improper input validation of parameters returned to the application from a web site. An attacker with a valid Webex account could exploit these vulnerabilities by persuading a user to follow a URL that is designed to return malicious path parameters to the affected software. A successful exploit could allow the attacker to obtain restricted information from other Webex users.

Frequently asked questions

What is CVE-2020-3502?: Multiple vulnerabilities in the user interface of Cisco Webex Meetings Desktop App could allow an authenticated, remote attacker to obtain restricted information from other Webex users. These vulnerabilities are due to improper input validation of parameters returned to the application from a web site. An attacker with a valid Webex account could exploit these vulnerabilities by persuading a user to follow a URL that is designed to return malicious path parameters to the affected software. A successful exploit could allow the attacker to obtain restricted information from other Webex users.
How severe is CVE-2020-3502?: CVE-2020-3502 has a CVSS 3.x base score of 4.1, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2020-3502 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-3502?: CVE-2020-3502 primarily affects Cisco Webex Meetings. In total, 9 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-3502?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-3502 published?: CVE-2020-3502 was published on 2020-08-17 and last updated on 2026-06-17.

References

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-webex-client-g3zevBcp

Affected products (9)

cpe:2.3:a:cisco:webex_meetings:*:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings:39.7.4:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:3.0:-:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:3.0:maintenance_release1:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:3.0:maintenance_release2:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:3.0:maintenance_release3:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:4.0:-:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:4.0:maintenance_release1:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:4.0:maintenance_release2:*:*:*:*:*:*

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