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Samba EUVDEUVD-2026-58669

| CVE-2026-58224 MEDIUM
Missing Support for Integrity Check (CWE-353)
N/A vendor:alpine GHSA-ph76-744q-p8fh
6.5
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
    Identify unpatched Alpine samba instance
  2. Exploit
    Trigger unspecified vulnerability
  3. Impact
    Achieve unknown impact

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A08:2025 - Software or Data Integrity Failures
ASVS 5.0
V15 - Secure Coding and Architecture Integrity check implementation
Exploitation Conditions

Exploitation conditions cannot be determined - the CVE description contains only a fix version reference with no detail on required configuration, authentication, network exposure, or specific Samba feature. No CVSS vector is available to infer attack vector or privilege requirements. Authentication requirements are not confirmed from available data. Security teams should review the upstream Samba 4.23.10 release notes and the Alpine Linux advisory to identify whether exploitation requires authenticated access, a specific Samba role (file server, AD DC, print server), or particular configuration options.

Impact

Risk cannot be meaningfully assessed from the available intelligence. No CVSS vector, CVSS score, CWE, EPSS score, KEV status, or POC data was provided. The vulnerability is not listed in the CISA KEV catalog, and no public exploit has been identified. The sole confirmed signal is an Alpine Linux vendor advisory indicating a fix was shipped in samba 4.23.10-r0. Without knowing the attack vector, required privileges, affected component (smbd, winbind, AD DC, etc.), or potential impact (confidentiality, integrity, availability), assigning a risk tier would be speculative. Security teams should consult the upstream Samba release notes and the Alpine Linux security advisory for authoritative severity data before prioritizing remediation.

Exploit ScenarioDerived

An attack scenario cannot be constructed from the available data. The affected component within Samba, required attack vector, and impact are all unknown. No public exploit or proof-of-concept code has been identified at time of analysis.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
Patch available 0.4% exploitation probability (EPSS)

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AnalysisAIv1 – Aug 05, 2026

Samba on Alpine Linux was patched in package version 4.23.10-r0, addressing an unspecified vulnerability. The nature of the flaw, affected attack surface, and potential impact are not derivable from the available data - only the fix version and affected platform (Alpine Linux) are confirmed. No CVSS score, CWE classification, or vulnerability description has been published at time of analysis, making risk characterization impossible without additional vendor disclosure.

RemediationAI

Upgrade the samba package on Alpine Linux to version 4.23.10-r0 or later using the standard Alpine package manager: 'apk upgrade samba'. This is the vendor-confirmed fix. No workarounds are documented in the available data. Because the vulnerability type is unknown, specific compensating controls cannot be responsibly recommended beyond standard Samba hardening: restrict SMB port exposure (TCP 139/445) to trusted network segments, enforce authentication on all shares, and disable unused Samba services (e.g., winbind, AD DC) if not required. Consult the Alpine Linux security advisories and the Samba project release notes for any additional mitigations specific to the patched issue.

Affects your stack

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Technical ContextAI · show details

Samba is the open-source implementation of the SMB/CIFS networking protocol, providing file sharing, printer sharing, and Active Directory domain controller capabilities on Unix-like systems. The affected package is the Alpine Linux distribution's samba build, versioned as 4.23.10-r0 (where '-r0' denotes the Alpine package revision). The root cause class (CWE) is not available in the provided data, and no CPE strings were supplied to further constrain the affected component within the Samba codebase.

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Severity by source

Vendor (vendor:alpine) PRIMARY 6.5 MEDIUM
AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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

CVSS VectorVendor: vendor:alpine

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

Lifecycle Timeline

1
CVSS changed
Aug 14, 2026 - 15:22 NVD
6.5 (MEDIUM)

DescriptionCVE.org

Alpine Linux: samba fixed in 4.23.10-r0

Threat Intelligence Overview

EPSS Score
0.4%
Top 66% exploitable
Prevalence
Medium
widely used SMB server, but Alpine-specific packaging scopes footprint
Data Quality
5 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 MEDIUM
CISA KEV No
Public POC No
EPSS 0.4%
Patch available Yes
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
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
Controlled
Automatable· derived
No
Human Impact· derived
Medium

Priority Score

32
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +32
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.

Affected Products (CPE)CVE.org

cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*

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