EPP.sys in Emsisoft Anti-Malware prior to version 2018.12 allows an attacker to bypass ACLs because Interpreted Device Characteristics lacks FILE_DEVICE_SECURE_OPEN and therefore files and directories "inside" the \\.\EPP device are not properly protected, leading to unintended impersonation or object creation
Published Feb 8, 2019
7.5
HIGHCVSS 3.0
EPSS 4.89%
Description
EPP.sys in Emsisoft Anti-Malware prior to version 2018.12 allows an attacker to bypass ACLs because Interpreted Device Characteristics lacks FILE_DEVICE_SECURE_OPEN and therefore files and directories "inside" the \\.\EPP device are not properly protected, leading to unintended impersonation or object creation. This vulnerability has been fixed in version 2018.12 and later.
Affected products
No data.
- ≤ 2018.12
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
AV:N/AC:L/Au:N/C:N/I:P/A:N
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 3, 2026.
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 (17 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 4.89% (0.04890) | 91.82th | v5 (v2026.06.15) |
| Jun 15, 2026 | 4.89% (0.04890) | 90.92th | v5 (v2026.06.15) |
| Mar 30, 2025 | 4.28% (0.04275) | 87.77th | v4 (v2025.03.14) |
| Mar 29, 2025 | 6.51% (0.06512) | 84.76th | v4 (v2025.03.14) |
| Mar 17, 2025 | 4.28% (0.04275) | 88.08th | v4 (v2025.03.14) |
| Jul 20, 2024 | 0.39% (0.00386) | 73.41th | v3 (v2023.03.01) |
| Jul 1, 2024 | 0.39% (0.00386) | 73.31th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.32% (0.00321) | 69.81th | v3 (v2023.03.01) |
| Feb 2, 2024 | 0.32% (0.00321) | 67.64th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.25% (0.00254) | 61.53th | v3 (v2023.03.01) |
| Mar 6, 2023 | 6.33% (0.06332) | 90.90th | v2 (v2022.01.01) |
| Apr 1, 2022 | 6.33% (0.06332) | 90.06th | v2 (v2022.01.01) |
| Feb 4, 2022 | 13.68% (0.13679) | 90.84th | v2 (v2022.01.01) |
| Feb 3, 2022 | 4.50% (0.04504) | 76.47th | v5 (v2026.06.15) |
| Jan 6, 2022 | 4.50% (0.04504) | 76.26th | v1 |
| Sep 1, 2021 | 1.04% (0.01040) | 64.49th | v1 |
| Apr 14, 2021 | 1.04% (0.01040) | 0.00th | v1 |
No CWE recorded.
References (4)
- https://blog.emsisoft.com/en/32517/new-in-2018-12-safe-web-browsing-with-emsisoft-browser-security/ x_refsource_MISCRelease NotesVendor Advisory
- https://github.com/nafiez/nafiez.github.io/blob/master/_posts/2019-01-09-emsisoft-Anti-Malware-bypass.md x_refsource_MISCExploitThird Party Advisory
- https://help.emsisoft.com/en/1760/vulnerability-report-en/ x_refsource_MISCVendor Advisory
- https://nafiez.github.io/security/bypass/2019/01/08/emsisoft-Anti-Malware-bypass.html x_refsource_MISCExploitThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| https://blog.emsisoft.com/en/32517/new-in-2018-12-safe-web-browsing-with-emsisoft-browser-security/ | x_refsource_MISCRelease NotesVendor Advisory | |
| https://github.com/nafiez/nafiez.github.io/blob/master/_posts/2019-01-09-emsisoft-Anti-Malware-bypass.md | x_refsource_MISCExploitThird Party Advisory | |
| https://help.emsisoft.com/en/1760/vulnerability-report-en/ | x_refsource_MISCVendor Advisory | |
| https://nafiez.github.io/security/bypass/2019/01/08/emsisoft-Anti-Malware-bypass.html | x_refsource_MISCExploitThird Party Advisory |
Change history (0)
No recorded changes yet.