CVE-2026-20818

Name: CVE-2026-20818
Creator: NVD / NIST
Published: 2026-01-13T18:16:08.81+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.2/10EPSS 0.69%

Last modified Jun 17, 2026

CVE-2026-20818 is a medium-severity vulnerability rated 6.2/10 on the CVSS scale. Insertion of sensitive information into log file in Windows Kernel allows an unauthorized attacker to disclose information locally.. EPSS estimates a 0.69% chance of exploitation in the next 30 days.

Description

Insertion of sensitive information into log file in Windows Kernel allows an unauthorized attacker to disclose information locally.

Metrics

CVSS 3.1

6.2/10

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

EPSS Probability

0.69%

48.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-532

Affected Software

Vendor	Product	Versions
Microsoft	Windows Server 2016	< 10.0.14393.8783
Microsoft	Windows Server 2019	< 10.0.17763.8276
Microsoft	Windows Server 2022	< 10.0.20348.4648
Microsoft	Windows Server 2022 23h2	< 10.0.25398.2092
Microsoft	Windows Server 2025	< 10.0.26100.7623

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20818Vendor Advisory

Timeline

Published: Jan 13, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-20818?

Insertion of sensitive information into log file in Windows Kernel allows an unauthorized attacker to disclose information locally.

How severe is CVE-2026-20818?

CVE-2026-20818 has a CVSS score of 6.2/10 (MEDIUM severity). The EPSS model estimates a 0.69% probability of exploitation in the next 30 days.

How do I fix CVE-2026-20818?

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-2026-20818?

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

Scan your code now

Source: NVD / NIST