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Microsoft EUVDEUVD-2026-29666

| CVE-2026-40406 HIGH
Use After Free (CWE-416)
2026-05-12 microsoft GHSA-37x6-37vf-qf3r
Denial Of Service Microsoft Use After Free Memory Corruption
7.5
CVSS 3.1 · NVD
Temporal: 6.5
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Severity by source

NVD PRIMARY
7.5 HIGH
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CIRCL (temporal)
6.5 MEDIUM
cvss

Primary rating from NVD.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

Lifecycle Timeline

1
CVE Published
May 12, 2026 - 16:58 nvd
HIGH 7.5

DescriptionCVE.org

Use after free in Windows TCP/IP allows an unauthorized attacker to disclose information over a network.

Analysis

Use after free in Windows TCP/IP allows an unauthorized attacker to disclose information over a network.

Same weakness CWE-416 – Use After Free

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CVE-2019-0708 CRITICAL POC
9.8
CVE-2015-5119 CRITICAL POC
9.8
CVE-2014-0322 HIGH POC
8.8
CVE-2012-4792 HIGH POC
8.8
CVE-2009-4324 HIGH POC
7.8
CVE-2015-0313 CRITICAL POC
9.8
CVE-2015-5122 CRITICAL POC
9.8
CVE-2013-2551 HIGH POC
8.8

Same technique Denial Of Service

View all
CVE-2015-5119 CRITICAL POC
9.8
CVE-2011-2462 CRITICAL POC
9.8
CVE-2011-0611 HIGH POC
8.8
CVE-2012-1889 HIGH POC
8.8
CVE-2012-0507 CRITICAL POC
9.8
CVE-2014-1761 HIGH POC
7.8
CVE-2015-5122 CRITICAL POC
9.8
CVE-2011-0609 HIGH POC
7.8

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EUVD-2026-29666 vulnerability details – vuln.today
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