Skip to main content

Ubuntu (package unspecified) CVE-2026-109411

| EUVDEUVD-2026-112398 HIGH
Improper Handling of Case Sensitivity (CWE-178)
2026-10-28 vendor:ubuntu GHSA-pwp9-3h93-h2x8
8.1
CVSS 3.1 · NVD
View

Attack ChainAIDerived

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

  1. Access
    Access affected Ubuntu package
  2. Exploit
    Trigger undisclosed flaw
  3. Impact
    Unknown impact

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V1 - Encoding and Sanitization Case sensitivity handling
Exploitation Conditions

The specific prerequisites cannot be extracted because the description does not state the affected feature, protocol, configuration, or deployment mode, and no CVSS vector is supplied. The trigger is not described in the available sources. Authentication requirements cannot be confirmed from available data because no CVSS vector (and therefore no PR metric) is present. The only contextual limit derivable from the input is that the issue is tracked through the Ubuntu vendor channel, implying the affected code is a package distributed by Ubuntu, but the exact package, versions, and any required configuration are unverified.

Impact

Risk cannot be meaningfully quantified from the supplied data. There is no description, no CVSS base score or vector, and no CWE, so attack vector, complexity, privilege, and impact are all unknown. No EPSS probability, no CISA KEV listing, and no POC or exploit reference are present in the input, so by the precision rules this is 'no public exploit identified at time of analysis.' The only concrete signals are a vuln.today priority of 'this_month' (a moderate, non-emergency cadence rather than act_now or emergency) and that the source is the Ubuntu vendor channel, which indicates a flaw tracked through Ubuntu's security process - most likely a package shipped in Ubuntu rather than Ubuntu-specific code. Because every mechanism-level detail (whether the vector is network or local, whether authentication is required, what the impact is) is missing, this cannot be confirmed as either a true priority or a high-CVSS-but-low-real-risk item; it is simply undetermined. The 'this_month' label is the single piece of evidence suggesting it warrants scheduled remediation rather than emergency response.

Exploit ScenarioDerived

No exploitation scenario can be reconstructed because the description, affected component, and CVSS vector are all absent from the available sources. The trigger is not described in the available sources, so the attack vector, privilege level, and impact are unknown. No POC or exploit reference is present in the input.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
Patch available

Get an e-mail when this CVE is exploited, patched or re-scored. Free account.

Alert me

AnalysisAIv1 – Oct 28, 2026

CVE-2026-109411 is tracked through the Ubuntu vendor channel, which indicates the affected code is a package distributed by Ubuntu, but the supplied record carries no description, CVSS vector, CWE classification, or reference links, so the specific package, the vulnerable versions, and the resulting impact are all unverified. No public exploit code or proof-of-concept reference is present in the supplied data, and risk cannot be meaningfully quantified from the supplied data. The only prioritization signal available is the vuln.today decision label 'this_month', which places it below immediate-action items.

RemediationAI

No vendor-released patch and no fixed version are identified in the supplied data, and no workaround is described, so no upgrade target can be cited at this time. The actionable step is to identify the affected package by monitoring the Ubuntu security notices and CVE tracker pages for CVE-2026-109411 and matching the published package and release against installed systems; once a USN is issued, apply the updated package versions it names. Because the affected feature, protocol, and configuration are unknown, specific compensating controls cannot be prescribed without risking disruption to unrelated services, and the trigger conditions are not described in the available sources.

Affected VersionsENISA

Samba 4.25.0 <4.25.1

Affected Packages

euvd samba fix: 4.25.1

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

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

Technical ContextAI · show details

No CWE, CVSS vector, or advisory text is provided, so the underlying technology, library, or protocol cannot be identified beyond the fact that the source is an Ubuntu distribution package. Because the affected component is unknown, the trigger conditions are not described in the available sources, and no conclusion can be drawn about whether exploitation requires local access, authentication, user interaction, or a specific configuration or deployment mode. Treat the vulnerability class as undetermined until the Ubuntu security notice (USN) or the upstream project advisory is published and can be matched to an installed package version.

Know when the next one hits your stack

  • Watch products and get an email when something new is published
  • Check this CVE against your own stack and servers
  • Exploit and PoC references, threat intelligence from 22 sources

No credit card · 7-day full trial

Severity by source

NVD PRIMARY 8.1 HIGH
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Lifecycle Timeline

1
Patch available
Oct 28, 2026 - 20:04 EUVD

DescriptionCVE.org

[Unknown description]

Threat Intelligence Overview

Data Quality
3 sources
Confidence: Low

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 N/A
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
Open
Automatable· derived
No
Human Impact· derived
Medium

Priority Score

40
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +40
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.

This site uses cookies essential for authentication and security. No tracking or analytics cookies are used. Privacy Policy