CVE-2026-69304

ASP.NET Core Denial of Service Vulnerability

MEDIUM 5.9

En bref

Source: NVD
EPSS: EPSS 0.85 % · centile 58 (2026-10-28)
État: PUBLISHED
Publiée: 2026-09-08 17:17 UTC
Mise à jour: 2026-10-14 23:13 UTC
Attribuée par: microsoft
Statut NVD: Analyzed

Description

Improper handling of highly compressed data (data amplification) in ASP.NET Core allows an unauthorized attacker to deny service over a network.

Faiblesses (CWE)

CWE-409 — Gestion incorrecte de données fortement compressées (bombe zip)

Références

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69304

Scores

Version	Score	Vecteur	Évalué par
CVSS 3.1	MEDIUM 5.9	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C	microsoft
CVSS 3.1	MEDIUM 5.9	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H	NVD · secure@microsoft.com (Secondary)
CVSS 3.1	MEDIUM 5.9	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H	NVD · nvd@nist.gov (Primary)

Avis

GHSA-8cp2-47hg-mfgh — Microsoft Security Advisory CVE-2026-69304 – ASP.NET Core Denial of Service Vulnerability

Références européennes

ENISA EUVD · EUVD-2026-73741
GCVE · GCVE-0-2026-69304

Avis du CERT-FR

CERTFR-2026-AVI-1149 — Multiples vulnérabilités dans les produits Microsoft · cert.ssi.gouv.fr
CERTFR-2026-AVI-1146 — Multiples vulnérabilités dans Microsoft .Net · cert.ssi.gouv.fr

Configurations affectées (CPE NVD)

cpe:2.3:a:microsoft:asp.net_core:*:*:*:*:*:*:*:* ≥ 8.0.0 < 8.0.28
cpe:2.3:a:microsoft:asp.net_core:*:*:*:*:*:*:*:* ≥ 9.0.0 < 9.0.17
cpe:2.3:a:microsoft:asp.net_core:*:*:*:*:*:*:*:* ≥ 10.0.0 < 10.0.9
cpe:2.3:a:microsoft:asp.net_core:*:*:*:*:*:*:*:* > 11.0.0
cpe:2.3:a:microsoft:asp.net_core:11.0:rc1:*:*:*:*:*:*
cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:*:*:* ≥ 17.14.0 < 17.14.40
cpe:2.3:a:microsoft:visual_studio_2026:*:*:*:*:*:*:*:* ≥ 18.9.0 < 18.9.3
cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:* ≥ 8.0.0 < 8.0.31
cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:* ≥ 9.0.0 < 9.0.20
cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:* ≥ 10.0.0 < 10.0.12

Produits affectés

Produit	Versions
Microsoft · .NET 10.0	affected 10.0.0 < 10.0.12
Microsoft · .NET 8.0	affected 8.0.0 < 8.0.31
Microsoft · .NET 9.0	affected 9.0.0 < 9.0.20
Microsoft · ASP.NET Core 10.0	affected 10.0 < 10.0.12
Microsoft · ASP.NET Core 11.0	affected 11.0 < 11.0 RC1
Microsoft · ASP.NET Core 8.0	affected 8.0 < 8.0.31
Microsoft · ASP.NET Core 9.0	affected 9.0 < 9.0.20
Microsoft · Microsoft Visual Studio 2022 version 17.14	affected 17.14.0 < 17.14.40
Microsoft · Microsoft Visual Studio 2026 version 18.9	affected 18.9.0 < 18.9.3

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)	Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD