CVE-2021-41066Public exploit

UAC bypass via missing current-user privilege validation

Published Dec 14, 2021 · Updated Aug 4, 2024

Missing authorization in Bopsoft Listary 6 and earlier allows local users to access protected system files through an elevated instance. The administrator-configured instance retains elevated file access and handles later Listary requests without validating the current user's privileges or presenting another UAC prompt. Exploitation requires an administrator to configure Listary to run elevated, after which a lower-privileged local user can access files otherwise protected by UAC.

CVSS severity7.5
High
EPSS probability1.30%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in Bopsoft Listary 6 and earlier allows local users to access protected system files through an elevated instance. The administrator-configured instance retains elevated file access and handles later Listary requests without validating the current user's privileges or presenting another UAC prompt. Exploitation requires an administrator to configure Listary to run elevated, after which a lower-privileged local user can access files otherwise protected by UAC.

The record

CVE
CVE-2021-41066
Published
Dec 14, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-862, T1548.002
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Dec 14, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.6NIST NVDAV:N/AC:H/Au:N/C:C/I:C/A:C
7.5NIST NVDCVSS:3.1/AV:N/AC:H/PR:N/UI:R/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
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-862Missing Authorization
T1548.002Abuse Elevation Control Mechanism: Bypass User Account Control

Public exploit references

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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