Security readout for executives and security teams
Plain-English summary
CVE-2020-3194 can let a malicious Webex recording file run code on a Windows user’s machine if opened with affected Cisco Webex playback software. The risk is strongest where staff receive ARF or WRF recordings from email links, attachments, customers, partners, or external meeting workflows.
Executive priority
Treat this as a high-priority endpoint remediation item where Webex recording playback is present. Business urgency depends on how often users receive external recording files and whether endpoint controls limit code execution under user privileges.
Technical view
The issue affects Cisco Webex Network Recording Player for Windows and Cisco Webex Player for Windows. Insufficient validation of elements in ARF or WRF recordings can lead to arbitrary code execution with the privileges of the targeted user. CVSS 3.0 is 7.8, local attack vector, low complexity, no privileges, and user interaction required.
Likely exposure
Exposure is endpoint-based, not server-side. Organizations are most exposed where Windows systems have affected Webex playback software installed and users open Webex recording files from untrusted or semi-trusted sources.
Exploitation context
The source bundle describes social delivery through a malicious ARF or WRF link or email attachment. It does not show CISA KEV listing or other evidence of active exploitation, so active exploitation should not be assumed.
Researcher notes
Relevant details are CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H and CWE-119. The provided affected-version data is incomplete, so version validation depends on Cisco’s advisory rather than the CVE bundle alone.
Mitigation direction
- Check Cisco’s advisory for affected and fixed Webex Player releases.
- Update or remove affected Webex playback software per Cisco guidance.
- Limit opening ARF or WRF files from external or unexpected sources.
- Use endpoint controls to reduce execution impact for user-opened files.
Validation and detection
- Inventory Windows endpoints for Cisco Webex Network Recording Player and Webex Player.
- Compare installed versions against Cisco’s advisory guidance.
- Confirm which users handle ARF or WRF recordings from external sources.
- Review endpoint telemetry for suspicious activity following recording-file opens.
Public sources used
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
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-119: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
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-2020-3194 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 7.8 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H1.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
7.8HighVector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- 20200415 Cisco Webex Network Recording Player and Cisco Webex Player Arbitrary Code Execution VulnerabilityCVE 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.
Improper Restriction of Operations within the Bounds of a Memory Buffer
Improper Restriction of Operations within the Bounds of a Memory Buffer represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.