CVE-2026-114148
Description
Incorrect default permissions in ASP.NET Core allows an authorized attacker to elevate privileges locally.
What privileges could be gained by an attacker who successfully exploited this vulnerability? An attacker who successfully exploited this vulnerability could gain the highest privileges on the system.
Statement
This vulnerability is rated as an Important severity for Red Hat environments because improper file permissions on installed .NET components can allow an authenticated local user to modify system files and escalate privileges to root, compromising the entire host. Although the flaw grants full local compromise, exploitation is bounded by the prerequisite of having existing user access or shell execution on the underlying system, preventing remote unauthenticated exploitation. Systems running Red Hat Enterprise Linux in multi-user or shared hosting environments that execute .NET workloads are primarily exposed to this risk.
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 7.8 | N/A | 7.8 |
| Attack Vector | Local | N/A | Local |
| Attack Complexity | Low | N/A | Low |
| Privileges Required | Low | N/A | Low |
| User Interaction | None | N/A | None |
| Scope | Unchanged | N/A | Unchanged |
| Confidentiality | High | N/A | High |
| Integrity Impact | High | N/A | High |
| Availability Impact | High | N/A | High |
| score_breakdown_labels.null | N/A | N/A | N/A |
| score_breakdown_labels.null | N/A | N/A | N/A |
| score_breakdown_labels.null | N/A | N/A | N/A |
Vector
Red Hat: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
cve.org: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Red Hat CVSS v3 Score Explanation
Microsoft CNA CVSS from pre-release advisory
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