HIGH CISA KEV
CVE-2026-41091
CVSS v3
7.8
HIGH
EPSS Score
0.4 %
exploit probability, as of 2026-10-20
CISA KEV
Yes
known exploited
Exploitation
—
SSVC status
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Affected and fixed versions
Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2026-41091 yet.
Description
Microsoft Security Update (CVE-2026-41091)
CISA Known Exploited Vulnerability
- Date Added
- 2026-05-20
- Patch Due Date
- 2026-06-03
- Ransomware Use
- Unknown
Technical details
- CVSS v3 Vector
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
- Published
- 2026-06-01
- MSRC Title
- Microsoft Defender Elevation of Privilege Vulnerability
Frequently asked questions
What is CVE-2026-41091?
Microsoft Security Update (CVE-2026-41091)
Is CVE-2026-41091 actively exploited?
Yes. CVE-2026-41091 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2026-06-03.
What is the CVSS score for CVE-2026-41091?
CVE-2026-41091 has a CVSS v3 base score of 7.8 (HIGH severity), with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C.
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