5.4

CVE-2022-41091: Microsoft Windows Mark of the Web (MOTW) Security Feature Bypass Vulnerability

CVSS: 5.4v3.1MediumKEVRansomwareAnalyzed
Published 09-11-2022Last modified 10-08-2026
Open JSON

Vulnerability summary

CVE-2022-41091 is a medium (CVSS 5.4) Incorrect Authorization vulnerability in Microsoft Windows. It is known to be exploited: CISA lists it, first on 08-11-2022. It has been used in ransomware campaigns. EPSS estimates a 1.91% chance of exploitation in the next 30 days, higher than 79.4% of scored vulnerabilities.

Overall risk
90/100
0100
Critical · default modelHow is this calculated?
CVSS score
5.4/10
010
Medium · v3.1 (CVE.org)
EPSS score
1.91%
0%100%
Low · +0.10 pp in 30 days
KEVListedCISA
RansomwareKnown useFlagged by CISA
Public exploits0No public exploits recorded

Timeline

  1. 08-11-2022
    Added to CISA KEVMicrosoft Windows Mark of the Web (MOTW) Security Feature Bypass Vulnerability
  2. 09-11-2022
    PublishedVulnerability first disclosed.
  3. 09-12-2022
    CISA remediation dueApply updates per vendor instructions.
  4. 10-08-2026
    Last modifiedVulnerability information updated.

Description

Windows Mark of the Web Security Feature Bypass Vulnerability

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

1.91%

Chance of exploitation in the next 30 days

Percentile

79%

Versus all other CVEs

30-day change

+0.10 pp

From 1.81% on 19-09-2026

19-09-202619-10-2026
EPSS score
1.91%

Known exploited

Compare KEV catalogs
CISA KEVListed
Added
08-11-2022
Federal due date
09-12-2022
Ransomware

CISA required action

Apply updates per vendor instructions. portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-41091 nvd.nist.gov/vuln/detail/CVE-2022-41091

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Microsoft23 products

1 vendor · 23 products

References

2 links