CVE-2021-32021

Administrator-level code execution via message broker

Published Nov 10, 2021 · Updated Aug 3, 2024

Code execution in the message broker of BlackBerry Protect for Windows 1574 and earlier allows local users to run code with service administrator rights. BlackBerry identifies the message broker as the vulnerable locus but has not published the malformed input, message path, or erroneous operation that triggers the condition. Low local privileges are required; successful exploitation places code in an administrator-rights Cylance service context, enabling host data access, modification, and service interruption.

CVSS severity7.8
High
EPSS probability0.30%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Code execution in the message broker of BlackBerry Protect for Windows 1574 and earlier allows local users to run code with service administrator rights. BlackBerry identifies the message broker as the vulnerable locus but has not published the malformed input, message path, or erroneous operation that triggers the condition. Low local privileges are required; successful exploitation places code in an administrator-rights Cylance service context, enabling host data access, modification, and service interruption.

The record

CVE
CVE-2021-32021
Published
Nov 10, 2021
Updated
Aug 3, 2024
Vendor
BlackBerry
Product
BlackBerry Protect for Windows
Classifications
T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 10, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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=Version 1574 and earlier

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

BlackBerry · BlackBerry Protect for Windowsversion=Version 1574 and earlier

Published CVSS scores

7.2NIST NVDAV:L/AC:L/Au:N/C:C/I:C/A:C
7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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

T1068Exploitation for Privilege Escalation

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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