Security readout for executives and security teams
Plain-English summary
Cisco Webex Meetings Client for macOS could expose sensitive device information to someone on the same local network. The issue is not described as remotely exploitable over the internet, and it does not affect integrity or availability in the provided data. Business risk is mainly local-network information leakage.
Executive priority
Treat this as a moderate-priority endpoint hygiene and network segmentation issue. It is unlikely to justify emergency response by itself, but exposed executive, engineering, or shared-office Macs should be reviewed promptly because the flaw leaks sensitive device information without authentication.
Technical view
CVE-2020-3182 is a CWE-200 information disclosure flaw in Webex Meetings Client for macOS mDNS replies. An unauthenticated adjacent attacker can query a particular service and receive sensitive information from an affected device. CVSS 3.0 is 4.3: adjacent network, low complexity, no privileges, no user interaction, low confidentiality impact only.
Likely exposure
Organizations with macOS endpoints running Cisco Webex Meetings Client are potentially exposed when attackers can access the same local network segment. Guest Wi-Fi, shared office networks, or poorly segmented environments increase practical exposure. The source bundle does not identify specific affected versions.
Exploitation context
The provided sources support adjacent-network exploitation only. There is no CISA KEV listing and no cited evidence of active exploitation. Exploitation requires local-network reachability to affected macOS devices and results in information disclosure, not code execution.
Researcher notes
The bundle does not include fixed versions, specific leaked fields, or vendor mitigation text beyond the Cisco advisory reference. Analysis should stay bounded to adjacent-network mDNS information disclosure with confidentiality-only impact. Do not assert internet-scale exposure or active exploitation without additional cited evidence.
Mitigation direction
- Check Cisco advisory for affected and fixed macOS client versions.
- Update or remediate Webex Meetings Client per Cisco guidance.
- Segment guest and untrusted networks from managed macOS endpoints.
- Restrict unnecessary local discovery exposure through approved network controls.
- Prioritize managed Macs on shared office or Wi-Fi networks.
Validation and detection
- Inventory macOS endpoints with Cisco Webex Meetings Client installed.
- Compare installed versions against Cisco advisory guidance.
- Identify networks where untrusted devices share segments with managed Macs.
- Review MDM and network controls affecting mDNS exposure.
- Document exceptions where Webex cannot be updated promptly.
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-200: Information exposure and cloud metadata lookup
Information exposure and SSRF weaknesses can make discovery, cloud metadata, and credential material review relevant. 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-2020-3182 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
- 4.3 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/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:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N2.81.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
4.3MediumVector: CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Source materials
- CVE List V5 sourceCVE List V5
- 20200304 Cisco Webex Meetings Client for MacOS Information Disclosure 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.
Exposure of Sensitive Information to an Unauthorized Actor
Exposure of Sensitive Information to an Unauthorized Actor represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.