Security readout for executives and security teams
Plain-English summary
CVE-2021-1544 is a Cisco Webex Meetings client issue where the application may write sensitive meeting information into local logs. A person who can sign in to the affected computer could read those logs and potentially see meeting data or recorded transcription content.
Executive priority
Prioritize remediation for executives, legal, HR, security, and other sensitive meeting users. This is not a remote takeover issue, but it can expose confidential meeting content if endpoint access controls are weak.
Technical view
The vulnerability is an information disclosure flaw in Cisco Webex Meetings client logging, mapped to CWE-497. The CVSS 3.1 score is 5.5 because exploitation requires local access and low privileges, but successful access can expose high-confidentiality data without affecting integrity or availability.
Likely exposure
Exposure is limited to endpoints running affected Cisco Webex Meetings client software. Risk is higher on shared workstations, unmanaged endpoints, or systems where multiple local users can access application log files.
Exploitation context
The source bundle does not show CISA KEV listing or active exploitation evidence. The described attacker must already be authenticated locally and able to access files containing the logged details.
Researcher notes
The provided data identifies unsafe logging as the root cause and lists Cisco Webex Meetings as affected, but version and fixed-release details are not included in the bundle. Validate remediation decisions directly against the Cisco advisory rather than assuming coverage.
Mitigation direction
- Review Cisco's advisory for affected and fixed Webex client release guidance.
- Update Webex Meetings clients according to verified Cisco guidance.
- Limit local account access on systems used for sensitive meetings.
- Restrict permissions and retention for application logs where operationally feasible.
- Treat exposed meeting data or transcripts as potentially sensitive records.
Validation and detection
- Inventory endpoints with Cisco Webex Meetings client installed.
- Compare installed client versions against Cisco's advisory guidance.
- Review endpoint access models for shared or multi-user systems.
- Check whether Webex logs contain meeting data or transcription content.
- Verify local log permissions align with endpoint security policy.
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-497: 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 lookupCVE-2021-1544 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
- 5.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/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:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N1.83.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.5MediumVector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Source materials
- CVE List V5 sourceCVE List V5
- 20210602 Cisco Webex Meetings Client Software Logging 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.