What is the CVSS score of EUVD-2025-18283?

EUVD-2025-18283 has a CVSS 3.1 base score of 7.5 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N. EPSS exploitation probability: 0.1%.

Is there a public PoC exploit available for EUVD-2025-18283?

Yes, a public proof-of-concept exploit is available for EUVD-2025-18283. Prioritise patching immediately. EPSS: 0.1%.

How to fix or mitigate EUVD-2025-18283?

Within 24 hours: Inventory all OpenC3 COSMOS deployments and identify current versions; isolate affected instances from production networks if upgrade timeline exceeds 48 hours. Within 7 days: Contact vendor for v6.0.2 availability and timeline; if unavailable, implement network segmentation to restrict container-to-service communication and rotate all service credentials used by COSMOS. Within 30 days: Complete upgrade to v6.0.2 or later; conduct forensic audit for unauthorized credential access; implement secrets management solution (HashiCorp Vault, AWS Secrets Manager) to prevent future environment variable exposure.

Cosmos EUVD-2025-18283

| CVE-2025-28381 HIGH

Cleartext Storage of Sensitive Information in an Environment Variable (CWE-526)

2025-06-13 cve@mitre.org

Information Disclosure Cosmos Openc3

7.5

CVSS 3.1 · NVD

View

Vulnerability Assessment

Weakness	CWE CWE-526 OWASP Top 10:2025 A02:2025 - Security Misconfiguration ASVS 5.0 V13 - Configuration Environment variable protection
Impact	CVSS 7.5. EPSS 0.1%. Public PoC/exploit available. No patch confirmed.
Exploit ScenarioDerived	An attacker could exploit this vulnerability in OpenC3 COSMOS to compromise the security of affected deployments, potentially impacting confidentiality, integrity, or availability.

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

No patch listed yet 0.1% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 14, 2026

A security vulnerability in OpenC3 COSMOS (CVSS 7.5) that allows attackers. Risk factors: public PoC available.

Earlier versions of this analysis (1)

v1 Mar 14, 2026 - 21:34 CVSS 7.5

A credential leak in OpenC3 COSMOS before v6.0.2 allows attackers to access service credentials as environment variables stored in all containers.

RemediationAI

Monitor vendor channels for patch availability.

Affected VersionsENISA

n/a n/a

Affected Packages

pypi openc3 no fix

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

Vulnerability type not specified by vendor. CVSS 7.5 indicates high severity. Affects OpenC3 COSMOS.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 7.5 HIGH

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Lifecycle Timeline

PoC Detected

Oct 27, 2025 - 16:15 vuln.today

Public exploit code

CVE Published

Jun 13, 2025 - 14:15 nvd

HIGH 7.5

DescriptionCVE.org

A credential leak in OpenC3 COSMOS before v6.0.2 allows attackers to access service credentials as environment variables stored in all containers.

Executive ViewAI

Why It Matters

OpenC3 COSMOS installations before v6.0.2 expose service credentials stored in container environment variables to attackers. Any organization running affected versions faces immediate risk of unauthorized access to backend services and data systems. Public exploit code availability significantly increases exploitation likelihood.

Business Impact: High

Compensating Controls

Network segmentation: restrict COSMOS container egress to only required backend services. Container runtime hardening: disable container introspection and restrict environment variable access via seccomp/AppArmor profiles. Credential rotation: immediately rotate all service accounts referenced in COSMOS environment variables and implement monitoring for unusual authentication patterns. WAF/proxy rules: if COSMOS communicates via HTTP, implement WAF rules to detect credential exfiltration patterns. Disable non-essential features: temporarily restrict COSMOS access scope until patch deployment. Note: These mitigations reduce but do not eliminate risk; vendor patch is mandatory.

Threat Intelligence Overview

EPSS Score

0.1%

Top 66% exploitable

Exploit

POC

Public exploit code exists

Data Quality

5 sources

Confidence: Medium

EUVD

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 HIGH

CISA KEV No

Public POC Yes

EPSS 0.1%

Patch available No

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

Out-of-Cycle

Exploitation· derived

Poc

System Exposure· derived

Open

Automatable· derived

Yes

Human Impact

High

Priority Score

Low Medium High Critical

KEV: 0

EPSS: 0

CVSS: +38

PoC: +20

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Information Disclosure MEDIUM

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