Security readout for executives and security teams
Plain-English summary
Cisco Webex Meetings had a reflected XSS issue in its web-based management interface. An attacker would need to trick a user into clicking a malicious link. Successful exploitation could run script in that interface or expose browser-based information.
Executive priority
Treat as a moderate-risk remediation item. It is not presented as actively exploited, but Webex is business-critical and malicious links can target administrators or users who manage meetings.
Technical view
CVE-2020-3463 is CWE-79 reflected cross-site scripting caused by insufficient validation of user-supplied input in Cisco Webex Meetings' web-based management interface. CVSS 3.1 is 6.1, network exploitable, unauthenticated, low complexity, user interaction required, changed scope, low confidentiality and integrity impact.
Likely exposure
Organizations using Cisco Webex Meetings, particularly users accessing its web-based management interface. The provided sources do not specify affected version ranges, so exposure must be checked against Cisco's advisory.
Exploitation context
The source describes a malicious-link scenario requiring user interaction. The CVE is not listed as KEV in the provided bundle, and no cited source here supports active exploitation.
Researcher notes
Evidence is limited to CVE metadata and Cisco's advisory reference. The bundle does not provide affected version ranges, fixed releases, exploit observations, or detailed mitigations, so validation should start with Cisco's source.
Mitigation direction
- Review Cisco's advisory for affected releases, fixes, and official workarounds.
- Apply Cisco-provided updates or mitigations where the advisory identifies them.
- Inventory Cisco Webex Meetings usage and ownership across business units.
- Ensure users report suspicious links targeting Webex management workflows.
Validation and detection
- Confirm whether Cisco Webex Meetings is in use in the environment.
- Compare deployed service details against Cisco's advisory guidance.
- Verify remediation status with asset owners or platform administrators.
- Review browser-security and email reports for suspicious Webex-management links.
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-79: User-session and phishing behavior lookup
Client-side and session-facing weaknesses should be reviewed alongside initial-access and user-execution behaviors. 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 lookupCVE-2020-3463 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
- Medium
- CVSS
- 6.1 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
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:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N2.82.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.1MediumVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Source materials
- CVE List V5 sourceCVE List V5
- 20200805 Cisco Webex Meetings Reflected Cross-Site Scripting 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 Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.