Vulnerability DatabaseCVE-2026-62815
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CVE-2026-62815
Published:August 11, 2026
Updated:September 01, 2026
Use after free in Microsoft QUIC allows an unauthorized attacker to execute code over a network.
Affected Packages
https://github.com/microsoft/msquic.git (GITHUB):
Affected version(s) >=v0.9-draft-24 <v2.5.10
Fix Suggestion:
Update to version v2.5.10
microsoft.native.quic.msquic.openssl (NUGET):
Affected version(s) >=1.8.0 <2.5.10
Fix Suggestion:
Update to version 2.5.10
microsoft.native.quic.msquic.schannel (NUGET):
Affected version(s) >=1.8.0 <2.5.10
Fix Suggestion:
Update to version 2.5.10
Related Resources (1)
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62815
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CVSS v4
Base Score:
9.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
9.8
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Exploit Maturity
UNPROVEN
Weakness Type (CWE)
Use After Free
CWE-416
EPSS
Base Score:
0.98