What is the CVSS score of CVE-2021-22300?

CVE-2021-22300 has a CVSS 3.1 base score of 4.1 (Medium). CVSS vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N. EPSS exploitation probability: 0.1%.

Ecns280 Td Firmware CVE-2021-22300

MEDIUM

Cleartext Storage of Sensitive Information (CWE-312)

2021-02-06 psirt@huawei.com

Information Disclosure Huawei Ecns280 Td Firmware

4.1

CVSS 3.1 · NVD

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Vulnerability Assessment

Weakness	CWE CWE-312 OWASP Top 10:2025 A06:2025 - Insecure Design ASVS 5.0 V14 - Data Protection Encrypted storage of sensitive data
Impact	CVSS score of 4.1 (MEDIUM). Attack characteristics: local attack vector, high complexity, high privileges required, no user interaction not required.
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).

No patch listed yet 0.1% exploitation probability (EPSS)

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AnalysisAI

There is an information leak vulnerability in eCNS280_TD versions V100R005C00 and V100R005C10. Rated medium severity (CVSS 4.1). No vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

Affects your stack

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Technical ContextAI · show details

This vulnerability is classified under CWE-312. There is an information leak vulnerability in eCNS280_TD versions V100R005C00 and V100R005C10. A command does not have timeout exit mechanism. Temporary file contains sensitive information. This allows attackers to obtain information by inter-process access that requires other methods. Affected products include: Huawei Ecns280 Td Firmware.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 4.1 MEDIUM

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Local

Attack Complexity

High

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

DescriptionNVD

There is an information leak vulnerability in eCNS280_TD versions V100R005C00 and V100R005C10. A command does not have timeout exit mechanism. Temporary file contains sensitive information. This allows attackers to obtain information by inter-process access that requires other methods.

Threat Intelligence Overview

EPSS Score

0.1%

Top 96% exploitable

Data Quality

2 sources

Confidence: Low

NVD

CVE.org

EPSS

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 0.1%

Patch available No

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

Human Impact· derived

Medium

Priority Score

Low Medium High Critical

KEV: 0

EPSS: 0

CVSS: +20

PoC: 0

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.