HIGH CISA KEV

CVE-2026-41091

CVSS v3

7.8

HIGH

EPSS Score

1.2 %

exploit probability

CISA KEV

Yes

known exploited

Exploitation

—

SSVC status

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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