> CVE-2025-55315 [CRITICAL]

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PUBLISHED
2025-10-14 17:15
MODIFIED
2025-10-16 14:56
CVSS_SCORE V3
9.9
EPSS (Prob. Exploit)
67.16%
Top 0.7%
⚡ EPSS ÉLEVÉ (67.2%)
DATA SOURCES:
NVD 🔗 2025-10-18 RED HAT 🔗 2025-10-19 CVE PROJECT 🔗 2026-01-19 FIRST EPSS 🔗 2026-11-08 GITHUB 🔗 2026-10-28 OSV 🔗 2026-11-08 MSRC 🔗 2026-09-01

> DESCRIPTION

Inconsistent interpretation of http requests ('http request/response smuggling') in ASP.NET Core allows an authorized attacker to bypass a security feature over a network.

> AFFECTED_PRODUCTS

Red Hat - Red Hat Enterprise Linux 10
Version: 8.0.121
Red Hat - Red Hat Enterprise Linux 10
Version: 9.0.111
Red Hat - Red Hat Enterprise Linux 8
Version: 8.0.121
Red Hat - Red Hat Enterprise Linux 8
Version: 9.0.111
Red Hat - Red Hat Enterprise Linux 9
Version: 8.0.121
Red Hat - Red Hat Enterprise Linux 9
Version: 9.0.111
Red Hat - Red Hat Enterprise Linux 9.4 Extended Update Support
Version: 8.0.121

> CVSS V3 METRICS

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

> MÉTRIQUES CVSS DÉTAILLÉES

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L
Métrique Valeur Interprétation
AV (Vecteur d'Attaque)
Attack Vector
Network (N)
Exploit possible à distance via réseau (HTTP, API, etc.)
AC (Complexité d'Attaque)
Attack Complexity
Low (L)
Peu de conditions requises pour exploiter
PR (Privilèges Requis)
Privileges Required
Low (L)
Authentifié avec compte utilisateur basique
UI (Interaction Utilisateur)
User Interaction
None (N)
Aucune interaction utilisateur nécessaire
S (Périmètre)
Scope
Changed (C)
Impact s'étend au-delà du composant compromis
C (Impact Confidentialité)
Confidentiality Impact
High (H)
Divulgation totale d'informations
I (Impact Intégrité)
Integrity Impact
High (H)
Modification totale des données possible
A (Impact Disponibilité)
Availability Impact
Low (L)
Interruption partielle du service possible

> RÉSUMÉ DES IMPACTS

Confidentialité
High
Divulgation totale d'informations
Intégrité
High
Modification totale des données possible
Disponibilité
Low
Interruption partielle du service possible

> RED HAT SECURITY ADVISORIES

Red Hat Security Advisory: .NET 8.0 security update
An update for .NET 8.0 is now available for Red Hat Enterprise Linux 9.4 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vul...
Red Hat Security Advisory: .NET 9.0 security update
An update for .NET 9.0 is now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System...
Red Hat Security Advisory: .NET 9.0 security update
An update for .NET 9.0 is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System...
Red Hat Security Advisory: .NET 9.0 security update
An update for .NET 9.0 is now available for Red Hat Enterprise Linux 10. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System...
Red Hat Security Advisory: .NET 8.0 security update
An update for .NET 8.0 is now available for Red Hat Enterprise Linux 10. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System...
Red Hat Security Advisory: .NET 8.0 security update
An update for .NET 8.0 is now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System...
Red Hat Security Advisory: .NET 8.0 security update
An update for .NET 8.0 is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System...
Red Hat Security Advisory: Red Hat OpenShift Dev Spaces 3.25.0 Release.
Red Hat OpenShift Dev Spaces 3.25.0 has been released.
Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update
An update for Red Hat Hardened Images RPMs is now available.
Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update
An update for Red Hat Hardened Images RPMs is now available.

> MICROSOFT SECURITY PATCHES

Cette vulnérabilité est corrigée par les mises à jour Microsoft suivantes :

KB5068331 🔗
VENDOR FIX
Security Update KB5068331
Produit : 12415, 12416, 12414
Publié le 10/08/2026 • Bulletin 2025-Oct
KB5068332 🔗
VENDOR FIX
Security Update KB5068332
Produit : 12432, 12433, 12434
Publié le 10/08/2026 • Bulletin 2025-Oct
📋 Voir tous les détails sur MSRC Update Guide →

> RED HAT SEVERITY ASSESSMENT

THREAT SEVERITY
Important

> GITHUB SECURITY ADVISORY

GHSA-5rrx-jjjq-q2r5 CRITICAL

Microsoft Security Advisory CVE-2025-55315: .NET Security Feature Bypass Vulnerability

AFFECTED PACKAGES:
NUGET / Microsoft.AspNetCore.Server.Kestrel.Core
<= 2.3.0
Fixed in: 2.3.6
NUGET / Microsoft.AspNetCore.App.Runtime.win-x86
>= 8.0.0, <= 8.0.20
Fixed in: 8.0.21
NUGET / Microsoft.AspNetCore.App.Runtime.win-x64
>= 8.0.0, <= 8.0.20
Fixed in: 8.0.21
NUGET / Microsoft.AspNetCore.App.Runtime.win-arm64
>= 8.0.0, <= 8.0.20
Fixed in: 8.0.21
NUGET / Microsoft.AspNetCore.App.Runtime.win-arm
>= 8.0.0, <= 8.0.20
Fixed in: 8.0.21
NUGET / Microsoft.AspNetCore.App.Runtime.osx-x64
>= 8.0.0, <= 8.0.20
Fixed in: 8.0.21
NUGET / Microsoft.AspNetCore.App.Runtime.osx-arm64
>= 8.0.0, <= 8.0.20
Fixed in: 8.0.21
NUGET / Microsoft.AspNetCore.App.Runtime.linux-x64
>= 8.0.0, <= 8.0.20
Fixed in: 8.0.21
NUGET / Microsoft.AspNetCore.App.Runtime.linux-musl-x64
>= 8.0.0, <= 8.0.20
Fixed in: 8.0.21
NUGET / Microsoft.AspNetCore.App.Runtime.linux-musl-arm64
>= 8.0.0, <= 8.0.20
Fixed in: 8.0.21

> OSV (GOOGLE OPEN SOURCE VULNERABILITIES)

AFFECTED PACKAGES:
Unknown / Unknown
19 versions affected
ALIASES:
BIT-aspnet-core-2025-55315, GHSA-5rrx-jjjq-q2r5

> HISTORIQUE DES MODIFICATIONS

Première apparition
14/10/2025 17:15
Source: NVD
📊 ENRICHISSEMENT 19/10/2025 04:01
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
{ "severity_scale": null, "threat_severity": "Important" }
Nouvelle valeur:
{ "threat_severity": "Important", "severity_scale": null }
📊 ENRICHISSEMENT 18/10/2025 15:08
CVEPROJECT
Champ modifié: CVE Project
Ancienne valeur:
Non
Nouvelle valeur:
Oui
📊 ENRICHISSEMENT 18/10/2025 12:02
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
N/A
Nouvelle valeur:
{ "threat_severity": "Important", "severity_scale": null }
📊 ENRICHISSEMENT 18/10/2025 12:02
REDHAT
Champ modifié: Red Hat
Ancienne valeur:
Non
Nouvelle valeur:
Oui
Total des modifications: 4 Dernière mise à jour: 1 year ago
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