CVE-2021-1372

Local information disclosure via unsafe shared memory

Published Feb 17, 2021 · Updated Nov 8, 2024

Information disclosure in Cisco Webex Productivity Tools for Windows allows local users to read sensitive Webex data. The application places usernames, meeting information, or authentication tokens in shared memory that another local application with memory-view permissions can read. Exploitation requires valid Windows credentials and a login after another user has authenticated to Webex on the same system.

CVSS severity5.5
Medium
EPSS probability0.42%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in Cisco Webex Productivity Tools for Windows allows local users to read sensitive Webex data. The application places usernames, meeting information, or authentication tokens in shared memory that another local application with memory-view permissions can read. Exploitation requires valid Windows credentials and a login after another user has authenticated to Webex on the same system.

The record

CVE
CVE-2021-1372
Published
Feb 17, 2021
Updated
Nov 8, 2024
Vendor
ClamAV
Product
Cisco Webex Productivity Tools
Classifications
CWE-202, T1005
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 17, 2021CVE publishedPublication date reported by the CVE source.
  2. Nov 8, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=n/a

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

ClamAV · Cisco Webex Productivity Toolsversion=n/a

Published CVSS scores

5.5Cisco Systems, Inc.CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:X/RL:X/RC:X

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-202Exposure of Sensitive Information Through Data Queries
T1005Data from Local System

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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