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CVE-2026-62815

critical · 9.8

Use after free in Microsoft QUIC allows an unauthorized attacker to execute code over a network.

9.8

CVSS

1.0%

EPSS (exploit prob.)

61st

EPSS percentile

2026-08-11

Published

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

Weaknesses

CWE-416

Affected products

Vendor	Product	Affected versions
microsoft	windows_11_23h2	< 10.0.22631.7517
microsoft	windows_11_23h2	< 10.0.22631.7517
microsoft	windows_11_24h2	< 10.0.26100.9106
microsoft	windows_11_24h2	< 10.0.26100.9106
microsoft	windows_11_25h2	< 10.0.26200.9106
microsoft	windows_11_25h2	< 10.0.26200.9106
microsoft	windows_11_26h1	< 10.0.28000.2704
microsoft	windows_11_26h1	< 10.0.28000.2704
microsoft	windows_server_2022	< 10.0.20348.5440
microsoft	windows_server_2025	< 10.0.26100.33222

Check a specific version with /api/v1/cve/match.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62815

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-62815