CVE-2021-1372

Cisco Webex Meetings Desktop App and Webex Productivity Tools for Windows Shared Memory Information Disclosure Vulnerability

MEDIUM
5.5
CVSS Score
Published: February 17, 2021 at 04:55 PM UTC
Updated: June 17, 2026 at 03:31 AM UTC
3 products affected across 1 vendorWebex Meetings ServerWebex MeetingsWebex Productivity Tools

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

Description

A vulnerability in Cisco Webex Meetings Desktop App and Webex Productivity Tools for Windows could allow an authenticated, local attacker to gain access to sensitive information on an affected system. This vulnerability is due to the unsafe usage of shared memory by the affected software. An attacker with permissions to view system memory could exploit this vulnerability by running an application on the local system that is designed to read shared memory. A successful exploit could allow the attacker to retrieve sensitive information from the shared memory, including usernames, meeting information, or authentication tokens. Note: To exploit this vulnerability, an attacker must have valid credentials on a Microsoft Windows end-user system and must log in after another user has already authenticated with Webex on the same end-user system.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 40.10v < 40.6
Affected range stops below 40.10, so it looks safe — our inference, not a vendor statement
Affected range stops below 40.6, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.5MEDIUMcisco
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-202

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