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CVE-2022-41091

Microsoft Windows Mark of the Web (MOTW) Security Feature Bypass

5.4 MEDIUMActively exploited (CISA KEV)Used in ransomwareEPSS 1.81%
  1. Published9 Nov 2022
  2. Added to CISA KEV8 Nov 2022
  3. Remediation due9 Dec 2022
Actively exploited (CISA KEV)

Microsoft Windows Mark of the Web (MOTW) contains a security feature bypass vulnerability resulting in a limited loss of integrity and availability of security features.

Added to KEV: 8 Nov 2022Federal remediation due: 9 Dec 2022Used in ransomware

Description

Windows Mark of the Web Security Feature Bypass Vulnerability

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionRequired
ScopeUnchanged
ConfidentialityNone
IntegrityLow
AvailabilityLow
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L

Affected products

Microsoft Windows 10 1507< 10.0.10240.19567
Microsoft Windows 10 1607< 10.0.14393.5501
Microsoft Windows 10 1809< 10.0.17763.3650
Microsoft Windows 10 20h2< 10.0.19042.2251
Microsoft Windows 10 21h1< 10.0.19043.2251
Microsoft Windows 10 21h2< 10.0.19044.2251
Microsoft Windows 10 22h2< 10.0.19045.2251
Microsoft Windows 11 21h2< 10.0.22000.1219
Microsoft Windows 11 22h2< 10.0.22621.819
Microsoft Windows Server 2016< 10.0.14393.5501
Microsoft Windows Server 2019< 10.0.17763.3650
Microsoft Windows Server 2022< 10.0.20348.1249

Remediation

Fixed in
Microsoft Windows 10 1507≥ 10.0.10240.19567
Microsoft Windows 10 1607≥ 10.0.14393.5501
Microsoft Windows 10 1809≥ 10.0.17763.3650
Microsoft Windows 10 20h2≥ 10.0.19042.2251
Microsoft Windows 10 21h1≥ 10.0.19043.2251
Microsoft Windows 10 21h2≥ 10.0.19044.2251
Microsoft Windows 10 22h2≥ 10.0.19045.2251
Microsoft Windows 11 21h2≥ 10.0.22000.1219
Microsoft Windows 11 22h2≥ 10.0.22621.819
Microsoft Windows Server 2016≥ 10.0.14393.5501

References

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Frequently asked

Is CVE-2022-41091 being actively exploited?

Yes. CVE-2022-41091 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 8 Nov 2022. It has been used in ransomware campaigns.

How severe is CVE-2022-41091?

CVE-2022-41091 has a CVSS 3.1 base score of 5.4, rated medium. EPSS estimates a 1.81% probability of exploitation.

Which products are affected by CVE-2022-41091?

Affected products include Microsoft Windows 10 1507, Microsoft Windows 10 1607, Microsoft Windows 10 1809, Microsoft Windows 10 20h2, Microsoft Windows 10 21h1, and 7 more.

How do I fix CVE-2022-41091?

Upgrade affected software to a fixed version, for example Microsoft Windows 10 1507 10.0.10240.19567, Microsoft Windows 10 1607 10.0.14393.5501, Microsoft Windows 10 1809 10.0.17763.3650 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2022-41091 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, Secuno flags any affected asset as top-priority automatically. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.