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CVE-2023-21549

HIGHCVSS 8.8/10EPSS 1.43%

Last modified

CVE-2023-21549 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. Windows SMB Witness Service Elevation of Privilege Vulnerability. EPSS estimates a 1.43% chance of exploitation in the next 30 days.

Description

Windows SMB Witness Service Elevation of Privilege Vulnerability

Metrics

CVSS 3.1
8.8/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability
1.43%

69.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersionsUpdate
MicrosoftWindows 10 1607All versions—
MicrosoftWindows 10 1809All versions—
MicrosoftWindows 10 20h2All versions—
MicrosoftWindows 10 21h2All versions—
MicrosoftWindows 10 22h2All versions—
MicrosoftWindows 11 21h2All versions—
MicrosoftWindows 11 22h2All versions—
MicrosoftWindows 7All versionsSp1
MicrosoftWindows 8.1All versions—
MicrosoftWindows Rt 8.1All versions—
MicrosoftWindows Server 2012All versions—
MicrosoftWindows Server 2012r2—
MicrosoftWindows Server 2016All versions—
MicrosoftWindows Server 2019All versions—
MicrosoftWindows Server 2022All versions—

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2023-21549?
Windows SMB Witness Service Elevation of Privilege Vulnerability
How severe is CVE-2023-21549?
CVE-2023-21549 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 1.43% probability of exploitation in the next 30 days.
How do I fix CVE-2023-21549?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-21549?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST