CVE-2022-41091
MediumExploitedPublic exploitWindows Mark of the Web Security Feature Bypass Vulnerability
Published Nov 9, 2022 · Updated Aug 10, 2026
Key Facts
Patch immediately- CVE-2022-41091 is a medium-severity vulnerability (CVSS 5.4 v3.1) affecting Windows 10 1507 (Microsoft), Windows 10 1607 (Microsoft), Windows 10 1809 (Microsoft) and 20 more products.
- It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Nov 8, 2022 and is known to be used in ransomware campaigns. Public exploit code is available.
- EPSS estimates a 1.9% probability of exploitation in the next 30 days.
- Fixed versions are available, including Windows 10 1507 10.0.10240.19567, Windows 10 1607 10.0.14393.5501, Windows 10 1809 10.0.17763.3650.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v3.1
5.4
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L
EPSS (30-day exploit likelihood)
1.9%
Higher than 79.4% of all scored CVEs
Exploited in the wild
Yes
4 catalog listings, used by ransomware
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2022-41091 brief as a PDF
Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.
Description
Windows Mark of the Web Security Feature Bypass Vulnerability
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| CISA KEV | Nov 8, 2022 | Dec 9, 2022 | Known |
| Industry KEV feed | Nov 8, 2022 | Dec 9, 2022 | Known |
| CIRCL KEV | Nov 8, 2022 | Dec 9, 2022 | Known |
| ENISA EUVD | Nov 8, 2022 | n/a | Not reported |
Required action: Apply updates per vendor instructions.
Affected Products
26 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Windows 10 1507Microsoft | See advisory | 10.0.10240.19567 |
| Windows 10 1607Microsoft | See advisory | 10.0.14393.5501 |
| Windows 10 1809Microsoft | See advisory | 10.0.17763.3650 |
| Windows 10 20h2Microsoft | See advisory | 10.0.19042.2251 |
| Windows 10 21h1Microsoft | See advisory | 10.0.19043.2251 |
Patched Releases
Windows 10 1507
10.0.10240.19567
Windows 10 1607
10.0.14393.5501
Windows 10 1809
10.0.17763.3650
Windows 10 20h2
10.0.19042.2251
Windows 10 21h1
10.0.19043.2251
Windows 10 21h2
10.0.19044.2251
Windows 10 22h2
10.0.19045.2251
Windows 11 21h2
10.0.22000.1219
Windows 11 22h2
10.0.22621.819
Windows Server 2016
10.0.14393.5501
Windows Server 2019
10.0.17763.3650
Windows Server 2022
10.0.20348.1249
Windows 10 Version 1507
10.0.10240.19567
Windows 10 Version 1607
10.0.14393.5501
Windows 10 Version 1809
10.0.17763.3650
Windows 10 Version 20H2
10.0.19042.2251
Windows 10 Version 21H1
10.0.19043.2251
Windows 10 Version 21H2
10.0.19044.2251
Windows 10 Version 22H2
10.0.19045.2251
Windows 11 version 21H2
10.0.22000.1219
Windows 11 version 22H2
10.0.22621.819
Windows Server 2016 (Server Core installation)
10.0.14393.5501
Windows Server 2019 (Server Core installation)
10.0.17763.3650
Timeline
Added to CISA KEV
Nov 8, 2022
Added to Industry KEV feed
Nov 8, 2022
Added to CIRCL KEV
Nov 8, 2022
Added to ENISA EUVD
Nov 8, 2022
Publicly disclosed
Nov 9, 2022
Last updated
Aug 10, 2026
Weakness Type
- CWE-863 Incorrect Authorization
References
- advisoryhttps://blog.qualys.com/vulnerabilities-threat-research/2022/11/08/november-2022-patch-tuesday
- advisoryhttps://blog.talosintelligence.com/microsoft-patch-tuesday-for-november-2022/
- advisoryhttps://msrc-blog.microsoft.com/2022/09/29/customer-guidance-for-reported-zero-day-vulnerabilities-in-microsoft-exchange-server/
- advisoryhttps://techcommunity.microsoft.com/t5/exchange-team-blog/released-november-2022-exchange-server-security-updates/ba-p/3669045
- advisoryhttps://www.bleepingcomputer.com/news/microsoft/microsoft-november-2022-patch-tuesday-fixes-6-exploited-zero-days-68-flaws/
FAQ
Common Questions.
Windows Mark of the Web Security Feature Bypass Vulnerability
Affected: Windows 10 1507 (Microsoft); Windows 10 1607 (Microsoft); Windows 10 1809 (Microsoft), among others. The full list is in the CVE brief.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Nov 8, 2022 and is known to be used in ransomware campaigns.
Yes. It was added on Nov 8, 2022 with a federal remediation due date of Dec 9, 2022.
Public exploit code is available.
Fixed versions are available, including Windows 10 1507 10.0.10240.19567, Windows 10 1607 10.0.14393.5501, Windows 10 1809 10.0.17763.3650.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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