Detections
Analytics

CVE-2026-62815

critical

Description

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

References

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

https://www.helpnetsecurity.com/2026/08/12/august-2026-patch-tuesday-cve-2026-68820/

https://securityaffairs.com/197048/security/microsoft-patch-tuesday-for-august-2026-fixed-a-zero-day-and-wormable-rce.html

https://www.securityweek.com/august-2026-patch-tuesday-microsoft-fixes-421-cves-one-exploited-zero-day/

https://thehackernews.com/2026/08/microsoft-patches-398-flaws-including.html

Details

Source: Mitre, NVD

Published: 2026-08-11

Updated: 2026-08-14

Risk Information

CVSS v2

Base Score: 10

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

Severity: Critical

CVSS v3

Base Score: 9.8

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

Severity: Critical

EPSS

EPSS: 0.00936