Is CVE-2026-34341 in the CISA KEV catalog?

No. CVE-2026-34341 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-34341?

CVE-2026-34341 has a CVSS v3 base score of 7.0 (Important).

What is the EPSS score for CVE-2026-34341?

CVE-2026-34341 has an EPSS score of 0.20% (10th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-34341?

Install KB5087537 for Windows 10 Version 1607. Fixes are available for 22 affected products.

CVE & CISA-KEV Catalog

CVE-2026-34341

HIGH

7.0

CVSS v3

NVD

Description

Double free in Windows Link-Layer Discovery Protocol (LLDP) allows an authorized attacker to elevate privileges locally.

CWE-415

How to fix

Remediation Available

Windows 10 Version 1607Windows

Install:KB5087537Microsoft

Windows 10 Version 1809Windows

Install:KB5087538Microsoft

Windows 10 Version 21H2Windows

Install:KB5087544Microsoft

Windows 10 Version 22H2Windows

Install:KB5094127Microsoft

Install:KB5087544Microsoft

Windows 11 Version 23H2Windows

Install:KB5087420Microsoft

Install:KB5093998Microsoft

Windows 11 Version 24H2Windows

Install:KB5089466Microsoft

Install:KB5089549Microsoft

Windows 11 Version 25H2Windows

Install:KB5089549Microsoft

Install:KB5089466Microsoft

Windows 11 Version 26H1Windows

Install:KB5089548Microsoft

Windows 11 version 26H1Windows

Install:KB5089548Microsoft

Windows Server 2012Windows

Install:KB5087470Microsoft

Windows Server 2012 (Server Core installation)Windows

Install:KB5087470Microsoft

Windows Server 2012 R2Windows

Install:KB5087471Microsoft

Windows Server 2012 R2 (Server Core installation)Windows

Install:KB5087471Microsoft

Windows Server 2016Windows

Install:KB5087537Microsoft

Windows Server 2016 (Server Core installation)Windows

Install:KB5087537Microsoft

Windows Server 2019Windows

Install:KB5087538Microsoft

Windows Server 2019 (Server Core installation)Windows

Install:KB5087538Microsoft

Windows Server 2022Windows

Install:KB5087545Microsoft

Install:KB5087424Microsoft

Windows Server 2022 (Server Core installation)Windows

Install:KB5087424Microsoft

Install:KB5087545Microsoft

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

Install:KB5087541Microsoft

Windows Server 2025Windows

Install:KB5087539Microsoft

Install:KB5087423Microsoft

Windows Server 2025 (Server Core installation)Windows

Install:KB5087539Microsoft

Install:KB5087423Microsoft

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 VectorLocal

Attack ComplexityHigh

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

0.20%probability of exploitation in 30 days

10thpercentile

Low risk: more likely to be exploited than 10% of all known CVEs.

References

Vendor Advisory1

msrc.microsoft.com

Embed a live status badge for CVE-2026-34341

Markdown

[![CVE-2026-34341](https://tridentstack.com/cve/badge/CVE-2026-34341.svg)](https://tridentstack.com/cve/CVE-2026-34341)

HTML

<a href="https://tridentstack.com/cve/CVE-2026-34341"><img src="https://tridentstack.com/cve/badge/CVE-2026-34341.svg" alt="CVE-2026-34341"></a>

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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 2026-05-14.