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Use after free in Microsoft QUIC allows an unauthorized attacker to execute code over a network.
Read the publisher's advisoryUse after free in Microsoft QUIC allows an unauthorized attacker to execute code over a network.
Read the publisher's advisoryUse after free in Microsoft QUIC allows an unauthorized attacker to execute code over a network.
Read the publisher's advisory## Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-92f5-vc22-8j33. This link is maintained to preserve external references. ## Original Description Use after free in Microsoft QUIC allows an unauthorized attacker to execute code over a network.
Read the publisher's advisory# Summary Use after free in Microsoft QUIC allows an unauthorized attacker to execute code over a network. # Details New network path creations and removals triggered by incoming packets can lead to a pointer invalidation. ## Patches - Guard path promotion [e0f55b5](https://github.com/microsoft/msquic/commit/e0f55b5fdc9fff0b4465976d066ebd22fb7e2b3b) # Impact An unauthenticated attacker could exploit this vulnerability by sending a specially crafted packet to an affected service over the network. Successful exploitation could allow the attacker to execute code on the target system. No authentication or user interaction is required.
Read the publisher's advisoryCISA KEV lists vulnerabilities known to be exploited. FIRST EPSS estimates the likelihood of exploitation in the next 30 days. An unavailable score does not mean zero risk.
This view includes predictions for CVE identifiers explicitly listed in public NuGet advisories. Microsoft release pages have their own prediction coverage. Check source status for the scope and latest checks.
This is a saved version of the risk data. The advisory details have their own history. Latest risk data.
No CISA KEV listing is included in this saved record. Exploitation may still have occurred.
FIRST EPSS: 0.97 % · percentile 62.08 % · scored 31 Oct 2026. This score is more than two days old.
Saved 01 Nov 2026 03:04:52 UTC · View this risk record (JSON)
Use after free in Microsoft QUIC allows an unauthorized attacker to execute code over a network.
Original source record · Cite this exact observation · Complete original publisher JSON
Source: cve-program · CVE Program Terms of Use. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.
CVSS 3.1 · 9.8 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
Use after free in Microsoft QUIC allows an unauthorized attacker to execute code over a network.
EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON.
datePublished: Aug 11, 2026, 5:04:30 PM
dateUpdated: Nov 10, 2026, 9:58:14 PM
msrc_CVE-2026-62815: Microsoft QUIC Remote Code Execution Vulnerability
CVE-2026-62815
NCSC-2026-0284: Kwetsbaarheden verholpen in Microsoft Windows
CVE-2026-50472 · CVE-2026-56174 · CVE-2026-54113 · CVE-2026-54984 · CVE-2026-49179 · CVE-2026-6727 · CVE-2026-59127 · CVE-2026-59128 · CVE-2026-59130 · CVE-2026-59132 · CVE-2026-59135 · CVE-2026-59134 · CVE-2026-59136 · CVE-2026-59137 · CVE-2026-59138 · CVE-2026-61345 · CVE-2026-61346 · CVE-2026-61353 · CVE-2026-61347 · CVE-2026-61348 · CVE-2026-61350 · CVE-2026-61356 · CVE-2026-61367 · CVE-2026-61923 · CVE-2026-61366 · CVE-2026-61368 · CVE-2026-61924 · CVE-2026-61925 · CVE-2026-61928 · CVE-2026-61930 · CVE-2026-61937 · CVE-2026-62692 · CVE-2026-61932 · CVE-2026-61936 · CVE-2026-61939 · CVE-2026-62690 · CVE-2026-62696 · CVE-2026-62699 · CVE-2026-62703 · CVE-2026-62707 · CVE-2026-62713 · CVE-2026-62712 · CVE-2026-62718 · CVE-2026-62715 · CVE-2026-62716 · CVE-2026-62719 · CVE-2026-62723 · CVE-2026-62724 · CVE-2026-62748 · CVE-2026-62729 · CVE-2026-62738 · CVE-2026-62746 · CVE-2026-62740 · CVE-2026-62753 · CVE-2026-62735 · CVE-2026-62739 · CVE-2026-62742 · CVE-2026-62745 · CVE-2026-62747 · CVE-2026-62750 · CVE-2026-62754 · CVE-2026-62783 · CVE-2026-62755 · CVE-2026-62758 · CVE-2026-62773 · CVE-2026-62774 · CVE-2026-62785 · CVE-2026-62777 · CVE-2026-62792 · CVE-2026-62784 · CVE-2026-62787 · CVE-2026-62795 · CVE-2026-62796 · CVE-2026-62797 · CVE-2026-62812 · CVE-2026-62816 · CVE-2026-62817 · CVE-2026-62818 · CVE-2026-62819 · CVE-2026-62820 · CVE-2026-62876 · CVE-2026-62877 · CVE-2026-62878 · CVE-2026-62889 · CVE-2026-62890 · CVE-2026-62892 · CVE-2026-62893 · CVE-2026-62894 · CVE-2026-62908 · CVE-2026-65662 · CVE-2026-65671 · CVE-2026-65678 · CVE-2026-65784 · CVE-2026-65786 · CVE-2026-65789 · CVE-2026-65787 · CVE-2026-65814 · CVE-2026-66799 · CVE-2026-68819 · CVE-2026-68820 · CVE-2026-70307 · CVE-2026-70304 · CVE-2026-70330 · CVE-2026-61352 · CVE-2026-70344 · CVE-2026-70345 · CVE-2026-70346 · CVE-2026-70347 · CVE-2026-42976 · CVE-2026-6726 · CVE-2026-59122 · CVE-2026-59125 · CVE-2026-59131 · CVE-2026-61349 · CVE-2026-61363 · CVE-2026-61364 · CVE-2026-61365 · CVE-2026-61358 · CVE-2026-61360 · CVE-2026-61920 · CVE-2026-61926 · CVE-2026-61918 · CVE-2026-61921 · CVE-2026-62698 · CVE-2026-62700 · CVE-2026-62701 · CVE-2026-62709 · CVE-2026-62710 · CVE-2026-62711 · CVE-2026-62720 · CVE-2026-62714 · CVE-2026-62717 · CVE-2026-62721 · CVE-2026-62725 · CVE-2026-62726 · CVE-2026-62728 · CVE-2026-62733 · CVE-2026-62743 · CVE-2026-62730 · CVE-2026-62732 · CVE-2026-62734 · CVE-2026-62757 · CVE-2026-62741 · CVE-2026-62752 · CVE-2026-62769 · CVE-2026-62771 · CVE-2026-62761 · CVE-2026-62768 · CVE-2026-62770 · CVE-2026-62776 · CVE-2026-62778 · CVE-2026-62782 · CVE-2026-62781 · CVE-2026-62800 · CVE-2026-62786 · CVE-2026-62790 · CVE-2026-62793 · CVE-2026-62803 · CVE-2026-62807 · CVE-2026-62814 · CVE-2026-62823 · CVE-2026-62822 · CVE-2026-62880 · CVE-2026-62881 · CVE-2026-62883 · CVE-2026-62885 · CVE-2026-62887 · CVE-2026-65681 · CVE-2026-65679 · CVE-2026-65773 · CVE-2026-65774 · CVE-2026-65775 · CVE-2026-65790 · CVE-2026-65791 · CVE-2026-65795 · CVE-2026-65794 · CVE-2026-65797 · CVE-2026-65799 · CVE-2026-65798 · CVE-2026-65796 · CVE-2026-66802 · CVE-2026-71331 · CVE-2026-62695 · CVE-2026-62702 · CVE-2026-62815 · CVE-2026-65672 · CVE-2026-59126 · CVE-2026-61359 · CVE-2026-61355 · CVE-2026-62751 · CVE-2026-62811 · CVE-2026-62832 · CVE-2026-62888 · CVE-2026-65777 · CVE-2026-61361 · CVE-2026-61927 · CVE-2026-61933 · CVE-2026-61934 · CVE-2026-62722 · CVE-2026-62737 · CVE-2026-62766 · CVE-2026-62779 · CVE-2026-62798 · CVE-2026-65785 · CVE-2026-65788 · CVE-2026-61357 · CVE-2026-61929 · CVE-2026-61938 · CVE-2026-62708 · CVE-2026-62736 · CVE-2026-62749 · CVE-2026-62780 · CVE-2026-62788 · CVE-2026-65776 · CVE-2026-56179 · CVE-2026-62688 · CVE-2026-62705 · CVE-2026-66804 · CVE-2026-62693 · CVE-2026-65783 · CVE-2026-70348 · CVE-2026-65779 · CVE-2026-65780 · CVE-2026-65778 · CVE-2026-65782 · CVE-2026-65781 · CVE-2026-62772 · CVE-2026-62775 · CVE-2026-62799 · CVE-2026-62824 · CVE-2026-59124 · CVE-2026-59133
Original source record · Cite this exact observation · Complete original publisher JSON
Source: euvd · ENISA EUVD · source terms and attribution apply. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.
EUVD CVSS 3.1 · 9.8 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
Use after free in Microsoft QUIC allows an unauthorized attacker to execute code over a network.
NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON.
Source analysis status: Analyzed
Weakness classifications: CWE-416
published: 2026-08-11T17:18:35.320
lastModified: 2026-08-14T18:46:24.667
The original JSON retains the logical configuration operators, exclusions and version bounds.
Original source record · Cite this exact observation · Complete original publisher JSON
Source: nvd · NIST NVD usage terms; underlying source attribution retained. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.
CVSS 3.1 · [email protected] · Secondary · 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
## Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-92f5-vc22-8j33. This link is maintained to preserve external references. ## Original Description Use after free in Microsoft QUIC allows an unauthorized attacker to execute code over a network.
Original source record · Cite this exact observation · Complete original publisher JSON
Source: osv · GitHub Advisory Database · CC-BY-4.0. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.
CVSS_V3 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Publisher rating · CRITICAL
# Summary Use after free in Microsoft QUIC allows an unauthorized attacker to execute code over a network. # Details New network path creations and removals triggered by incoming packets can lead to a pointer invalidation. ## Patches - Guard path promotion [e0f55b5](https://github.com/microsoft/msquic/commit/e0f55b5fdc9fff0b4465976d066ebd22fb7e2b3b) # Impact An unauthenticated attacker could exploit this vulnerability by sending a specially crafted packet to an affected service over the network. Successful exploitation could allow the attacker to execute code on the target system. No authentication or user interaction is required.
Original source record · Cite this exact observation · Complete original publisher JSON
Source: osv · GitHub Advisory Database · CC-BY-4.0. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.
CVSS_V3 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS_V4 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
Publisher rating · CRITICAL