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CVE-2024-20396

A vulnerability in the protocol handlers of Cisco Webex App could allow an unauthenticated, remote attacker to gain access to sensitive…

Medium5.3EPSS 0.42%
Published
Updated
Reserved
Assigned by
cisco

Description

A vulnerability in the protocol handlers of Cisco Webex App could allow an unauthenticated, remote attacker to gain access to sensitive information. This vulnerability exists because the affected application does not safely handle file protocol handlers. An attacker could exploit this vulnerability by persuading a user to follow a link that is designed to cause the application to send requests. If the attacker can observe transmitted traffic in a privileged network position, a successful exploit could allow the attacker to capture sensitive information, including credential information, from the requests.

Timeline

  1. ID reserved

    By cisco

  2. · 8 months later

    Published

  3. · 15 days later

    Record updated

Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.

Scores

CVSS scores of CVE-2024-20396, by who scored it
Scored byCVSSScoreVector
ciscoCNA (assigner)3.1Medium5.3CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N
NVDNVD · Analyzed3.1Medium6.5CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
EPSS (exploitation in 30 days)
0.42% · top 64% of all CVEs (7 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: no · Technical impact: partial
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.3.

Weakness

Affected products

  • Cisco · Cisco Webex Teams

    • affected 3.0.13464.0
    • affected 3.0.13538.0
    • affected 3.0.13588.0
    • affected 3.0.14154.0
    • affected 3.0.14234.0
    • affected 3.0.14375.0
    • affected 3.0.14741.0
    • affected 3.0.14866.0
    • affected 3.0.15015.0
    • affected 3.0.15036.0
    • affected 3.0.15092.0
    • affected 3.0.15131.0
    • affected 3.0.15164.0
    • affected 3.0.15221.0
    • affected 3.0.15333.0
    • affected 3.0.15410.0
    • affected 3.0.15485.0
    • affected 3.0.15645.0
    • affected 3.0.15711.0
    • affected 3.0.16040.0
    • affected 3.0.16269.0
    • affected 3.0.16273.0
    • affected 3.0.16285.0
    • affected 42.1.0.21190
    • affected 42.10.0.23814
    • affected 42.11.0.24187
    • affected 42.12.0.24485
    • affected 42.2.0.21338
    • affected 42.2.0.21486
    • affected 42.3.0.21576
    • affected 42.4.1.22032
    • affected 42.5.0.22259
    • affected 42.6.0.22565
    • affected 42.6.0.22645
    • affected 42.7.0.22904
    • affected 42.7.0.23054
    • affected 42.8.0.23214
    • affected 42.8.0.23281
    • affected 42.9.0.23494
    • affected 43.1.0.24716
    • and 4 more

What to do

Exploitation: The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerabilities that are described in this advisory.

References (1)

Sources

The same CVE in the primary databases and aggregators, to check against.

Badge for a README or a ticket

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Record last updated .