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Alpine Linux EUVDEUVD-2026-113163

| CVE-2026-114148 HIGH
Incorrect Default Permissions (CWE-276)
N/A vendor:alpine
7.8
CVSS 3.1 · Vendor: vendor:alpine
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Reach vulnerable .NET 8 runtime component
  2. Exploit
    Trigger undisclosed flaw (mechanism not described in available sources)
  3. Impact
    Impact undetermined from available data

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V13 - Configuration Default permission hardening
MITRE ATT&CK

1 technique across 1 tactic: Privilege Escalation

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Exploitation Conditions

The source states only that dotnet8-runtime is fixed in 8.0.33-r0 and provides no CVSS vector, no CWE, and no description of the triggering mechanism, so concrete prerequisites (required feature, protocol, configuration mode, or privilege level) cannot be extracted from the available data. The exploitation prerequisites and limiting factors are not described in the available sources; consult the upstream Microsoft .NET 8 advisory tied to this Alpine fix. Authentication requirements cannot be confirmed because no CVSS vector is provided.

Impact

This entry is an Alpine Linux package-tracking advisory stating only that dotnet8-runtime is fixed in 8.0.33-r0; it carries no CVSS score or vector, no CWE, no EPSS probability, no KEV listing, and no PoC/exploit reference. Because no CVSS vector is supplied, attack vector, complexity, privilege, and scope cannot be assessed, and authentication requirements cannot be confirmed from available data. The vuln.today Decision label is 'this_month', which signals a scheduled-remediation priority rather than act_now or emergency urgency. With EPSS, KEV, and PoC all absent, there is no public exploit identified at time of analysis and no evidence of active exploitation; absence of these signals is not proof of low risk but does not elevate it either. No conflict exists between signals because only one signal (the vendor fix advisory) is present - the dominant limitation here is missing data, not conflicting data. Real-world priority should be driven by the fact that this is a runtime shipped broadly, so the underlying .NET fix likely warrants timely patching, but the specific technical severity of CVE-2026-114148 cannot be substantiated from this input and should be verified against the upstream Microsoft .NET advisory and the Alpine security tracker.

Exploit ScenarioDerived

The available source states only that dotnet8-runtime is fixed in 8.0.33-r0 and does not describe how the flaw is triggered, so a concrete attack scenario cannot be constructed from this input. No PoC or exploit reference is present, so no public exploit is identified at time of analysis. Consult the upstream Microsoft .NET 8 security advisory corresponding to this fix for the actual attack mechanism and affected component.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
Patch available 0.4% exploitation probability (EPSS)

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AnalysisAIv1 – Oct 28, 2026

Alpine Linux packages for dotnet8-runtime are corrected in version 8.0.33-r0, per a vendor-reported package-tracking advisory. The entry supplies no CVSS score or vector, no CWE, and no description of the vulnerability mechanism, so the precise impact and the conditions required to trigger it are not described in the available sources. There is no KEV listing, no EPSS probability, and no public exploit reference, and no public exploit was identified at time of analysis; the priority label is 'this_month', reflecting routine patch cadence rather than an emergency.

RemediationAI

Upgrade the dotnet8-runtime package to 8.0.33-r0 on affected Alpine Linux systems, which is the vendor-released fixed version; this is the only fix identified in the available data. Because the advisory provides no vulnerability mechanism, no configuration-mode-specific workarounds can be derived, and the vendor's implied guidance is simply to update the package. Verify the upgrade with the Alpine package manager against the advisory from vendor:alpine, and cross-check the upstream Microsoft .NET 8 release notes for the matching runtime build to understand what was corrected before deciding whether any additional exposure assessment is warranted on hosts running .NET 8 workloads.

Affected VersionsENISA

.NET 9.0 installed on Mac OS 9.0.0 <9.0.320
.NET source-build Linux tarballs (all archive types) 8.0.100 <10.0.403-servicing.26523.112
.NET 11.0 installed on Mac OS 11.0.0-preview.1 <11.0.100-rc.3
.NET 8.0 installed on Linux 8.0.0 <8.0.427
.NET 11.0 installed on Windows 11.0.0-preview.1 <11.0.100-rc.3
.NET 10.0 installed on Mac OS 10.0.0 <10.0.403
.NET 8.0 installed on Mac OS 8.0.0 <8.0.427
.NET 10.0 installed on Windows 10.0.0 <10.0.403
.NET 9.0 installed on Linux 9.0.0 <9.0.320
.NET 10.0 installed on Linux 10.0.0 <10.0.403
.NET 8.0 installed on Windows 8.0.0 <8.0.427
ASP.NET Core runtime and targeting-pack Linux tarballs (Microsoft-published) 8.0.0 <9.0.22
.NET 11.0 installed on Linux 11.0.0-preview.1 <11.0.100-rc.3
.NET 9.0 installed on Windows 9.0.0 <9.0.320

Affected Packages

euvd asp_net_core_runtime_and_targeting_pack_linux_tarballs_microsoft_published fix: 9.0.22
euvd net_10_0_installed_on_linux fix: 10.0.403
euvd net_10_0_installed_on_mac_os fix: 10.0.403
euvd net_10_0_installed_on_windows fix: 10.0.403
euvd net_11_0_installed_on_linux fix: 11.0.100-rc.3
euvd net_11_0_installed_on_mac_os fix: 11.0.100-rc.3
euvd net_11_0_installed_on_windows fix: 11.0.100-rc.3
euvd net_8_0_installed_on_linux fix: 8.0.427
euvd net_8_0_installed_on_mac_os fix: 8.0.427
euvd net_8_0_installed_on_windows fix: 8.0.427
euvd net_9_0_installed_on_linux fix: 9.0.320
euvd net_9_0_installed_on_mac_os fix: 9.0.320
euvd net_9_0_installed_on_windows fix: 9.0.320
euvd net_source_build_linux_tarballs_all_archive_types fix: 10.0.403-servicing.26523.112

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 14 packages in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

The affected component is the .NET 8 runtime (dotnet8-runtime) as packaged and distributed by Alpine Linux, tracked against upstream Microsoft .NET 8 servicing releases. Because the advisory contains no CWE, no CVSS vector, and no technical description, the root-cause class of the underlying flaw is not stated in the available sources; the trigger is not described in the available sources. What is confirmed is the packaging-level fact that Alpine's dotnet8-runtime package reached build 8.0.33-r0, which corresponds to an upstream .NET 8 runtime version bump rather than an Alpine-specific patch. Determining the actual defect class, affected API surface, and whether the flaw is remote or local, and whether authentication is required, would require consulting the upstream Microsoft .NET 8 release notes and security advisory associated with the version that Alpine packaged. Authentication requirements are not confirmed from available data.

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Severity by source

Vendor (vendor:alpine) PRIMARY 7.8 HIGH
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Primary rating from Vendor (vendor:alpine) · only source for this CVE.

CVSS VectorVendor: vendor:alpine

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

2
Patch available
Oct 29, 2026 - 16:17 EUVD
CVE Published
Oct 28, 2026 - 09:39 cve.org
MEDIUM

DescriptionCVE.org

Alpine Linux: dotnet8-runtime fixed in 8.0.33-r0

Threat Intelligence Overview

EPSS Score
0.4%
Top 71% exploitable
Prevalence
High
the .NET 8 runtime is widely deployed across enterprise and container workloads
Vendor Status
Publicly Disclosed:No
Exploited:No
Latest Software Release:Exploitation Less Likely
Data Quality
4 sources
Confidence: Medium

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity HIGH
CISA KEV No
Public POC No
EPSS 0.4%
Patch available Yes
Active threat No
Deciding rule
HIGH severity (CVSS 7.0-8.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation· derived
None
System Exposure· derived
Small
Automatable· derived
No
Human Impact· derived
High

Priority Score

39
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +39
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Privilege escalation occurs when an attacker leverages flaws in access control mechanisms to gain permissions beyond what they were originally granted.

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