Security readout for executives and security teams
Plain-English summary
This flaw affects Cisco Webex recording players on Windows. If a user opens a malicious Webex recording file, an attacker could run code as that user. Business risk is highest where employees still use ARF or WRF recordings from email or links.
Executive priority
Treat this as a high-priority endpoint exposure if Webex recording players are present. It is not described as remotely exploitable without user action, but successful compromise could give an attacker the user's workstation privileges.
Technical view
CVE-2019-1928 is a CWE-119 memory-safety issue in Cisco Webex Network Recording Player and Cisco Webex Player for Windows. Improper validation of ARF and WRF files can allow arbitrary code execution after user interaction. CVSS v3.0 is 7.8 with local attack vector and required user interaction.
Likely exposure
Exposure is likely limited to Windows endpoints with the affected Cisco Webex recording/player software installed, especially users who receive or open ARF or WRF files. The source bundle does not provide exact affected versions.
Exploitation context
The cited description requires social engineering: delivery of a malicious ARF or WRF file by link or attachment, followed by the user opening it locally. The bundle marks KEV as false and provides no evidence of active exploitation.
Researcher notes
Focus validation on installed Windows players and ARF/WRF handling paths. The bundle supports arbitrary code execution through malformed recording files, but does not include exploit details, affected version ranges, fixed releases, or observed exploitation.
Mitigation direction
- Check Cisco's advisory for fixed versions and official remediation guidance.
- Inventory Windows endpoints for Cisco Webex recording/player software.
- Remove the affected player where Webex recording playback is not needed.
- Warn users not to open unexpected ARF or WRF files.
- Filter or quarantine unexpected ARF and WRF attachments where operationally acceptable.
Validation and detection
- Confirm whether Cisco Webex recording/player software exists on managed Windows endpoints.
- Compare installed versions with the Cisco advisory before closing remediation.
- Review mail and web controls for handling ARF and WRF files.
- Confirm users handling Webex recordings received targeted awareness guidance.
- Verify endpoint controls monitor unusual child processes from the player.
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-2019-1928 mapping review
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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
- 20190807 Cisco Webex Network Recording Player and Cisco Webex Player Arbitrary 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.
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.