What is the CVSS score of CVE-2020-27348?

CVE-2020-27348 has a CVSS 3.1 base score of 6.8 (Medium). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:L. EPSS exploitation probability: 0.7%.

Is there a public PoC exploit available for CVE-2020-27348?

Yes, a public proof-of-concept exploit is available for CVE-2020-27348. Prioritise patching immediately. EPSS: 0.7%.

Is there a patch available for CVE-2020-27348?

Yes, a patch is available for CVE-2020-27348. Update the affected software to the latest version immediately.

Snapcraft CVE-2020-27348

MEDIUM

Uncontrolled Search Path Element (CWE-427)

2020-12-04 security@ubuntu.com

RCE Canonical Ubuntu Linux Snapcraft

6.8

CVSS 3.1 · NVD

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Vulnerability Assessment

Weakness	CWE CWE-427 OWASP Top 10:2025 A08:2025 - Software or Data Integrity Failures ASVS 5.0 V13 - Configuration Search path element control
Impact	CVSS score of 6.8 (MEDIUM). Attack characteristics: local attack vector, low complexity, low privileges required, user interaction required. Public proof-of-concept exploit code is available.
Exploit ScenarioDerived	Successful exploitation could compromise the medium-severity affected system.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).

Patch available 0.7% exploitation probability (EPSS)

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AnalysisAI

In some conditions, a snap package built by snapcraft includes the current directory in LD_LIBRARY_PATH, allowing a malicious snap to gain code execution within the context of another snap if both. Rated medium severity (CVSS 6.8), this vulnerability is low attack complexity. Public exploit code available.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

Affected Packages

pypi snapcraft fix: 2.43.1, 4.4.4

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in pypi

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

Technical ContextAI · show details

This vulnerability is classified under CWE-427. In some conditions, a snap package built by snapcraft includes the current directory in LD_LIBRARY_PATH, allowing a malicious snap to gain code execution within the context of another snap if both plug the home interface or similar.4.4, prior to 2.43.1+16.04.1, and prior to 2.43.1+18.04.1. Affected products include: Canonical Snapcraft, Canonical Ubuntu Linux. Version information: prior to 4.4.4.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 6.8 MEDIUM

AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:L

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

Low

DescriptionNVD

In some conditions, a snap package built by snapcraft includes the current directory in LD_LIBRARY_PATH, allowing a malicious snap to gain code execution within the context of another snap if both plug the home interface or similar. This issue affects snapcraft versions prior to 4.4.4, prior to 2.43.1+16.04.1, and prior to 2.43.1+18.04.1.

Threat Intelligence Overview

EPSS Score

0.7%

Top 52% exploitable

Exploit

POC

Public exploit code exists

Data Quality

3 sources

Confidence: Low

NVD

CVE.org

EPSS

GitHub

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 Yes

EPSS 0.7%

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.