Security readout for executives and security teams
This is a user-assisted remote code execution issue in Cisco Webex recording players for Windows. A malicious meeting recording file could run attacker-controlled code if a user opens it with affected software. Business risk is endpoint compromise, but the provided sources do not show active exploitation or complete version details. Exposure is most likely on Windows endpoints with Cisco Webex Network Recording Player or Webex Player installed, especially users who receive Webex recording files by email or links. The source bundle does not provide affected version ranges. Treat this as high priority where Webex recording players remain deployed. The risk is workstation takeover through a file-open workflow, not internet-exposed server compromise. Prioritize inventory, vendor-guided updates, and reducing unnecessary player installations. Mitigation focus: Review Cisco advisory cisco-sa-20180919-webex for fixed versions and vendor guidance.; Update or remove affected Cisco Webex recording players on Windows endpoints.; Block or quarantine unexpected ARF and WRF attachments where business processes allow..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
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Open ATT&CK lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2018-15421 mapping review
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Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
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CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- 20180919 Cisco Webex Network Recording Player Remote Code Execution VulnerabilitiesCVE reference · vendor-advisory, x_refsource_CISCO
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.