HIGH
An issue was discovered in Allegro Windows (formerly Popsy Windows) before 3.3.4156.1
Published Dec 8, 2021
7.8
HIGHCVSS 3.1
EPSS 0.30%
Description
An issue was discovered in Allegro Windows (formerly Popsy Windows) before 3.3.4156.1. A standard user can escalate privileges to SYSTEM if the FTP module is installed, because of DLL hijacking.
Affected products
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
7.8 HIGH NVD
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality Impact High
Integrity Impact High
Availability Impact High
1 other source (MITRE) ▾
7.1 HIGH MITRE
CVSS:3.1/AC:L/AV:A/A:N/C:H/I:L/PR:N/S:U/UI:N
Attack Complexity Low
Attack Vector Adjacent
Availability Impact None
Confidentiality Impact High
Integrity Impact Low
Privileges Required None
Scope Unchanged
User Interaction None
No CVSS v3.0 score for this CVE.
6.2 MEDIUM NVD
AV:L/AC:H/Au:N/C:C/I:C/A:C
Access Vector Local
Access Complexity High
Authentication None
Confidentiality Impact Complete
Integrity Impact Complete
Availability Impact Complete
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
0.30% 0.00300
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
EPSS probability 0.00300
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Table of values (13 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 0.30% (0.00300) | 20.55th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.29% (0.00290) | 20.44th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.05% (0.00048) | 12.17th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.07% (0.00070) | 32.43th | v3 (v2023.03.01) |
| Jun 29, 2024 | 0.07% (0.00068) | 29.93th | v3 (v2023.03.01) |
| Sep 3, 2023 | 0.07% (0.00068) | 27.93th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.06% (0.00060) | 23.34th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.89% (0.00885) | 27.89th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.40% (0.01404) | 49.02th | v2 (v2022.01.01) |
| Feb 3, 2022 | 2.74% (0.02742) | 63.06th | v1 |
| Jan 6, 2022 | 2.74% (0.02742) | 62.72th | v1 |
| Jan 5, 2022 | 0.62% (0.00624) | 46.35th | v5 (v2026.06.15) |
| Dec 9, 2021 | 0.62% (0.00624) | 45.88th | v1 |
Weaknesses (0)
No CWE recorded.
References (3)
- http://www.popsy.com/Documents/Setups/Setup.Allegro.3.3.4154.2.exe PatchVendor Advisory
- https://cds.thalesgroup.com/en/tcs-cert/CVE-2021-42110
- https://excellium-services.com/cert-xlm-advisory/CVE-2021-42110 PatchThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.popsy.com/Documents/Setups/Setup.Allegro.3.3.4154.2.exe | PatchVendor Advisory | |
| https://cds.thalesgroup.com/en/tcs-cert/CVE-2021-42110 | ||
| https://excellium-services.com/cert-xlm-advisory/CVE-2021-42110 | PatchThird Party Advisory |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Dec 8, 2021
Updated May 30, 2025
Reserved Oct 8, 2021
Link CVE-2021-42110
CISA Vulnrichment
Updated n/a