CVE-2020-3604
CVE-2020-3604 is a high-severity vulnerability in Cisco Webex Meetings with a CVSS 3.x base score of 7.8. 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-787.
Key facts
- Severity: High (CVSS 3.x base score 7.8)
- CVSS v2: 9.3
- EPSS exploit prediction: 2% (82nd percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-787
- Affected product: Cisco Webex Meetings
- Published:
- Last modified:
Description
Multiple vulnerabilities in Cisco Webex Network Recording Player for Windows and Cisco Webex Player for Windows could allow an attacker to execute arbitrary code on an affected system. The vulnerabilities are due to insufficient validation of certain elements of a Webex recording that is stored in the Advanced Recording Format (ARF) or Webex Recording Format (WRF). An attacker could exploit these vulnerabilities by sending a user a malicious ARF or WRF file through a link or email attachment and persuading the user to open the file with the affected software on the local system. A successful exploit could allow the attacker to execute arbitrary code on the affected system with the privileges of the targeted user.
Frequently asked questions
- What is CVE-2020-3604?
- Multiple vulnerabilities in Cisco Webex Network Recording Player for Windows and Cisco Webex Player for Windows could allow an attacker to execute arbitrary code on an affected system. The vulnerabilities are due to insufficient validation of certain elements of a Webex recording that is stored in the Advanced Recording Format (ARF) or Webex Recording Format (WRF). An attacker could exploit these vulnerabilities by sending a user a malicious ARF or WRF file through a link or email attachment and persuading the user to open the file with the affected software on the local system. A successful exploit could allow the attacker to execute arbitrary code on the affected system with the privileges of the targeted user.
- How severe is CVE-2020-3604?
- CVE-2020-3604 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2020-3604 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2020-3604?
- CVE-2020-3604 affects Cisco Webex Meetings. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2020-3604?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2020-3604 published?
- CVE-2020-3604 was published on 2020-11-06 and last updated on 2026-06-17.
References
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-webex-nbr-NOS6FQ24
- https://www.zerodayinitiative.com/advisories/ZDI-20-1363/
Affected products (1)
- cpe:2.3:a:cisco:webex_meetings:*:*:*:*:*:*:*:*
More vulnerabilities in Cisco Webex Meetings
- CVE-2018-0264 — Critical (CVSS 9.6): A vulnerability in the Cisco WebEx Network Recording Player for Advanced Recording Format (ARF) files could allow an…
- CVE-2018-0104 — Critical (CVSS 9.6): A vulnerability in Cisco WebEx Network Recording Player for Advanced Recording Format (ARF) files could allow a remote…
- CVE-2017-12372 — Critical (CVSS 9.6): A "Cisco WebEx Network Recording Player Remote Code Execution Vulnerability" exists in Cisco WebEx Network Recording…
- CVE-2017-12371 — Critical (CVSS 9.6): A "Cisco WebEx Network Recording Player Remote Code Execution Vulnerability" exists in Cisco WebEx Network Recording…
- CVE-2017-12370 — Critical (CVSS 9.6): A "Cisco WebEx Network Recording Player Remote Code Execution Vulnerability" exists in Cisco WebEx Network Recording…
- CVE-2017-12369 — Critical (CVSS 9.6): A "Cisco WebEx Network Recording Player Out-of-Bounds Vulnerability" exists in Cisco WebEx Network Recording Player for…
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