Dashboard / CVE-2026-62815

CVE-2026-62815

CRITICAL
INFO Priority: 0.10 BB Relevance: 80/100
Published: 2026-08-11 Modified: 2026-10-28 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction Conf. Impact Integ. Impact

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: None
S: Unchanged
C: High
I: High
A: High

Description

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

Weakness Classification (1)

Affected Software (26)

VendorProductVersion
Microsoft Windows 11 Version 23H2 10.0.22631.0 < 10.0.22631.7517
Microsoft Windows 11 Version 23H2 10.0.22631.0 < 10.0.22631.7517
Microsoft Windows 11 Version 24H2 10.0.26100.0 < 10.0.26100.9168
Microsoft Windows 11 Version 24H2 10.0.26100.0 < 10.0.26100.9168
Microsoft Windows 11 Version 25H2 10.0.26200.0 < 10.0.26200.9168
Microsoft Windows 11 Version 25H2 10.0.26200.0 < 10.0.26200.9168
Microsoft Windows 11 version 23H2 10.0.22631.0 < 10.0.22631.7517
Microsoft Windows 11 version 23H2 10.0.22631.0 < 10.0.22631.7517
Microsoft Windows 11 version 26H1 10.0.28000.0 < 10.0.28000.2704
Microsoft Windows 11 version 26H1 10.0.28000.0 < 10.0.28000.2704
Microsoft Windows Server 2022 10.0.20348.0 < 10.0.20348.5499
Microsoft Windows Server 2022 10.0.20348.0 < 10.0.20348.5499
Microsoft Windows Server 2025 10.0.26100.0 < 10.0.26100.33296
Microsoft Windows Server 2025 10.0.26100.0 < 10.0.26100.33296
Microsoft Windows Server 2025 (Server Core installation) 10.0.26100.0 < 10.0.26100.33296
Microsoft Windows Server 2025 (Server Core installation) 10.0.26100.0 < 10.0.26100.33296
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

References & Advisories (1)

Bug Bounty Relevance

80 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

9.8 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

EPSS — Exploitation Probability

0.97%
Raw Score 0.009740
Percentile 61.9%
Date 2026-10-28

Intelligence Sources

mitre ref →

External Links