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vim EUVDEUVD-2026-39450

| CVE-2026-55895 MEDIUM
OS Command Injection (CWE-78)
N/A vendor:alpine
5.7
CVSS 4.0 · Vendor: vendor:alpine
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Attack ChainAIDerived

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

  1. Access
    Open malicious file in vim
  2. Exploit
    Trigger uncharacterized vulnerability
  3. Impact
    Unknown impact

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V1 - Encoding and Sanitization OS command sanitization, avoid shell exec
MITRE ATT&CK

2 techniques across 1 tactic: Execution

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

Exploitation Conditions

Exploitation conditions cannot be extracted from the available data - the CVE description contains no technical detail beyond the patch version. No CVSS vector is present to indicate attack vector (local vs. network), privileges required, or user interaction. No special conditions can be confirmed or denied. Authentication requirements are not confirmed from available data. Defenders should consult the Alpine Linux security tracker and upstream vim release notes for version 9.2.0663 to determine actual prerequisites.

Impact

No risk signals are available from the provided intelligence: CVSS score and vector are absent, EPSS probability is not provided, KEV status is not confirmed, and no POC or exploit code has been identified. The sole data point is Alpine's vendor-sourced patch note. Without CVSS metrics, it is impossible to determine whether this is a network-reachable, privilege-escalating, or locally-triggered vulnerability. Vim vulnerabilities historically include modeline-based code execution (high severity) and denial-of-service via malformed files (lower severity) - but neither can be confirmed here. This must be treated as unknown severity until further technical detail is published.

Exploit ScenarioDerived

The exploit scenario cannot be determined from available data - no description, CVSS attack vector, or CWE was provided. Historically, vim vulnerabilities have been triggered by opening a maliciously crafted file (e.g., via a vim modeline executing arbitrary shell commands), but this cannot be attributed to CVE-2026-55895 without confirming the actual vulnerability class. No public exploit or POC has been identified at time of analysis.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
Patch available 0.2% exploitation probability (EPSS)

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AnalysisAIv1 – Jun 19, 2026

Vim on Alpine Linux was patched at version 9.2.0663-r0 to address CVE-2026-55895, per a vendor advisory from Alpine. The underlying vulnerability class, impact scope, and exploitation mechanism are entirely absent from available intelligence - no description, CVSS vector, CWE, or researcher disclosure accompanies this CVE at time of analysis. Security teams should treat this as an uncharacterized fix requiring upstream vim changelog review to determine actual impact and priority.

RemediationAI

On Alpine Linux, upgrade the vim package to version 9.2.0663-r0 or later using the standard package manager command: 'apk upgrade vim'. This is the vendor-confirmed fixed version per Alpine's security advisory. No upstream vim advisory URL, patch commit, or CVE description was provided to enable identification of workarounds. If the underlying vulnerability class were known, compensating controls such as disabling vim modelines (set nomodeline in .vimrc) could be considered as a precaution, but this is a general vim hardening measure, not a confirmed mitigation for this specific CVE. No other fix version was independently confirmed.

Affected VersionsENISA

vim < 9.2.0663

Affected Packages

euvd vim fix: 9.2.0663

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

Vim is a widely deployed terminal-based text editor present across nearly all Linux distributions, including Alpine Linux, which packages it independently. The fix is identified only by the Alpine package version 9.2.0663-r0, which maps to an upstream vim release. No CWE has been assigned to indicate the root cause class (e.g., heap overflow, use-after-free, command injection via modeline), and no CPE string was provided to narrow the vulnerable component. The actual vulnerability details must be sourced from the upstream vim changelog or commit history for version 9.2.0663.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (vendor:alpine) PRIMARY 5.7 MEDIUM
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U

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

CVSS VectorVendor: vendor:alpine

Attack Vector
Local
Attack Complexity
Low
Attack Requirements
None
Privileges Required
None
User Interaction
Active
Vulnerable system: Confidentiality
High
Vulnerable system: Integrity
High
Vulnerable system: Availability
High
Subsequent system: Confidentiality
None
Subsequent system: Integrity
None
Subsequent system: Availability
None

Lifecycle Timeline

2
Patch available
Jun 25, 2026 - 17:02 EUVD
CVSS changed
Jun 25, 2026 - 16:22 NVD
5.7 (MEDIUM)

DescriptionCVE.org

Alpine Linux: vim fixed in 9.2.0663-r0

Threat Intelligence Overview

EPSS Score
0.2%
Top 95% exploitable
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 0.2%
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
Defer
Exploitation· derived
None
System Exposure· derived
Small
Automatable· derived
No
Human Impact· derived
Medium

Priority Score

28
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +28
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

OS command injection occurs when an application passes unsanitized user input directly into system shell commands.

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