> CVE-2026-45491 [MEDIUM]

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PUBLISHED
2026-06-09 17:17
MODIFIED
2026-06-09 17:17
CVSS_SCORE V3
6.2
EPSS (Prob. Exploit)
0.37%
Top 70.0%
DATA SOURCES:
NVD 🔗 2026-06-09 RED HAT 🔗 2026-06-14 CWE MITRE 🔗 2026-11-01 FIRST EPSS 🔗 2026-10-25 GITHUB 🔗 2026-11-05 MSRC 🔗 2026-11-02

> DESCRIPTION

Improper link resolution before file access ('link following') in .NET allows an unauthorized attacker to perform tampering locally.

> AFFECTED_PRODUCTS

Red Hat - Red Hat Enterprise Linux 10
Version: 8.0.128
Red Hat - Red Hat Enterprise Linux 10
Version: 9.0.118
Red Hat - Red Hat Enterprise Linux 10
Version: 10.0.109
Red Hat - Red Hat Enterprise Linux 8
Version: 8.0.128
Red Hat - Red Hat Enterprise Linux 8
Version: 9.0.118
Red Hat - Red Hat Enterprise Linux 8
Version: 10.0.109
Red Hat - Red Hat Enterprise Linux 9
Version: 8.0.128
Red Hat - Red Hat Enterprise Linux 9
Version: 9.0.118
Red Hat - Red Hat Enterprise Linux 9
Version: 10.0.109
Red Hat - Red Hat Hardened Images

> CVSS V3 METRICS

CVSS_VECTOR
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
EXPLOITABILITY
2.5
IMPACT
3.6

> MÉTRIQUES CVSS DÉTAILLÉES

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Métrique Valeur Interprétation
AV (Vecteur d'Attaque)
Attack Vector
Local (L)
Exploit nécessite un accès local au système
AC (Complexité d'Attaque)
Attack Complexity
Low (L)
Peu de conditions requises pour exploiter
PR (Privilèges Requis)
Privileges Required
None (N)
Aucune authentification requise
UI (Interaction Utilisateur)
User Interaction
None (N)
Aucune interaction utilisateur nécessaire
S (Périmètre)
Scope
Unchanged (U)
Impact reste dans le périmètre du composant compromis
C (Impact Confidentialité)
Confidentiality Impact
None (N)
Aucune divulgation d'informations
I (Impact Intégrité)
Integrity Impact
High (H)
Modification totale des données possible
A (Impact Disponibilité)
Availability Impact
None (N)
Aucune interruption de service

> RÉSUMÉ DES IMPACTS

Confidentialité
None
Aucune divulgation d'informations
Intégrité
High
Modification totale des données possible
Disponibilité
None
Aucune interruption de service

> WEAKNESSES

CWE-59

> CWE DETAILED DESCRIPTIONS

CWE-59: Improper Link Resolution Before File Access - The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.

> RED HAT SECURITY ADVISORIES

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 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: .NET 10.0 security update
An update for .NET 10.0 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 10.0 security update
An update for .NET 10.0 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 Syste...
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 10.0 security update
An update for .NET 10.0 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 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 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: 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.
Red Hat Security Advisory: .NET 8.0 security update
An update for .NET 8.0 is now available for Red Hat Enterprise Linux 10.0 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vu...
Red Hat Security Advisory: .NET 8.0 security update
An update for .NET 8.0 is now available for Red Hat Enterprise Linux 9.6 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 10.0 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vu...
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 Update Services for SAP Solutions. Red Hat Product Security has rated this update as having a security impact of Important. A...
Red Hat Security Advisory: .NET 9.0 security update
An update for .NET 9.0 is now available for Red Hat Enterprise Linux 9.6 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vul...

> MICROSOFT SECURITY PATCHES

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

Security Update KB5097148
Produit : 20837, 20838, 20932, 20839
Publié le 31/10/2026 • Bulletin 2026-Jun
Security Update KB5097149
Produit : 12256, 12414, 12415, 12416
Publié le 31/10/2026 • Bulletin 2026-Jun
Security Update KB5097150
Produit : 12433, 12432, 12434, 12507
Publié le 31/10/2026 • Bulletin 2026-Jun
📋 Voir tous les détails sur MSRC Update Guide →

> RED HAT SEVERITY ASSESSMENT

THREAT SEVERITY
Moderate

> GITHUB SECURITY ADVISORY

GHSA-7q4v-2mr6-5gpx MODERATE

Microsoft Security Advisory CVE-2026-45491 – .NET Tampering Vulnerability

AFFECTED PACKAGES:
NUGET / Microsoft.NETCore.App.Runtime.osx-arm64
>= 10.0.0, <= 10.0.8
Fixed in: 10.0.9
NUGET / Microsoft.NETCore.App.Runtime.osx-arm64
>= 9.0.0, <= 9.0.16
Fixed in: 9.0.17
NUGET / Microsoft.NETCore.App.Runtime.osx-arm64
>= 8.0.0, <= 8.0.27
Fixed in: 8.0.28
NUGET / Microsoft.NETCore.App.Runtime.win-x64
>= 10.0.0, <= 10.0.8
Fixed in: 10.0.9
NUGET / Microsoft.NETCore.App.Runtime.win-x64
>= 9.0.0, <= 9.0.16
Fixed in: 9.0.17
NUGET / Microsoft.NETCore.App.Runtime.win-x64
>= 8.0.0, <= 8.0.27
Fixed in: 8.0.28
NUGET / Microsoft.NETCore.App.Runtime.linux-x64
>= 10.0.0, <= 10.0.8
Fixed in: 10.0.9
NUGET / Microsoft.NETCore.App.Runtime.linux-x64
>= 9.0.0, <= 9.0.16
Fixed in: 9.0.17
NUGET / Microsoft.NETCore.App.Runtime.linux-x64
>= 8.0.0, <= 8.0.27
Fixed in: 8.0.28

> HISTORIQUE DES MODIFICATIONS

Première apparition
09/06/2026 17:17
Source: NVD
📊 ENRICHISSEMENT 01/11/2026 06:59
CWE
Champ modifié: Description CWE
Ancienne valeur:
CWE-59: Improper Link Resolution Before File Access ('Link Following') - The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a ...
Nouvelle valeur:
CWE-59: Improper Link Resolution Before File Access - The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut th...
📊 ENRICHISSEMENT 01/07/2026 06:01
CWE
Champ modifié: Description CWE
Ancienne valeur:
N/A
Nouvelle valeur:
CWE-59: Improper Link Resolution Before File Access ('Link Following') - The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a ...
📊 ENRICHISSEMENT 14/06/2026 05:00
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
N/A
Nouvelle valeur:
{ "threat_severity": "Moderate", "severity_scale": null }
📊 ENRICHISSEMENT 14/06/2026 05:00
REDHAT
Champ modifié: Red Hat
Ancienne valeur:
Non
Nouvelle valeur:
Oui
Total des modifications: 4 Dernière mise à jour: 6 days ago

> REFERENCES

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45491
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