Is CVE-2025-29956 in the CISA KEV catalog?

No. CVE-2025-29956 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2025-29956?

CVE-2025-29956 has a CVSS v3 base score of 5.4 (MEDIUM).

What is the EPSS score for CVE-2025-29956?

CVE-2025-29956 has an EPSS score of 0.83% (53th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2025-29956?

Install KB5058387 for Windows 10. Fixes are available for 23 affected products.

CVE & CISA-KEV Catalog

CVE-2025-29956

MEDIUM

5.4

CVSS v3

NVD

Description

Buffer over-read in Windows SMB allows an authorized attacker to disclose information over a network.

CWE-126Buffer Over-read CWE-125Out-of-bounds Read

How to fix

Remediation Available

Windows 10Windows

Install:KB5058387Microsoft

Windows 10 Version 1607Windows

Install:KB5058383Microsoft

Windows 10 Version 1809Windows

Install:KB5058392Microsoft

Windows 10 Version 21H2Windows

Install:KB5058379Microsoft

Windows 10 Version 22H2Windows

Install:KB5058379Microsoft

Windows 11 Version 22H2Windows

Install:KB5058405Microsoft

Windows 11 Version 23H2Windows

Install:KB5058405Microsoft

Windows 11 Version 24H2Windows

Install:KB5058411Microsoft

Install:KB5058497Microsoft

Windows Server 2008Windows

Install:KB5058449Microsoft

Install:KB5058429Microsoft

Windows Server 2008 R2Windows

Install:KB5058454Microsoft

Install:KB5058430Microsoft

Windows Server 2012Windows

Install:KB5058451Microsoft

Windows Server 2012 (Server Core installation)Windows

Install:KB5058451Microsoft

Windows Server 2012 R2Windows

Install:KB5058403Microsoft

Windows Server 2012 R2 (Server Core installation)Windows

Install:KB5058403Microsoft

Windows Server 2016Windows

Install:KB5058383Microsoft

Windows Server 2016 (Server Core installation)Windows

Install:KB5058383Microsoft

Windows Server 2019Windows

Install:KB5058392Microsoft

Windows Server 2019 (Server Core installation)Windows

Install:KB5058392Microsoft

Windows Server 2022Windows

Install:KB5058500Microsoft

Install:KB5058385Microsoft

Windows Server 2022 (Server Core installation)Windows

Install:KB5058385Microsoft

Windows Server 2022, 23H2 Edition (Server Core installation)Windows

Install:KB5058384Microsoft

Windows Server 2025Windows

Install:KB5058497Microsoft

Install:KB5058411Microsoft

Windows Server 2025 (Server Core installation)Windows

Install:KB5058411Microsoft

Install:KB5058497Microsoft

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityHigh

Privileges RequiredLow

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityLow

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

Exploit Intelligence

0.83%probability of exploitation in 30 days

53rdpercentile

Moderate risk: more likely to be exploited than 53% of all known CVEs.

References

Vendor Advisory1

msrc.microsoft.com

Embed a live status badge for CVE-2025-29956

Markdown

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HTML

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-05-19.