What is the CVSS score of CVE-2021-22730?

CVE-2021-22730 has a CVSS 3.1 base score of 9.8 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 1.4%.

Evlink City Evc1S22P4 Firmware CVE-2021-22730

CRITICAL

Use of Hard-coded Credentials (CWE-798)

2021-07-21 cybersecurity@se.com

Authentication Bypass Schneider Electric Evlink City Evc1S22P4 Firmware Evlink City Evc1S7P4 Firmware Evlink Parking Evw2 Firmware Evlink Parking Evf2 Firmware Evlink Parking Ev 2 Firmware Evlink Smart Wallbox Evb1A Firmware

9.8

CVSS 3.1 · NVD

View

Vulnerability Assessment

Weakness	CWE CWE-798 OWASP Top 10:2025 A07:2025 - Authentication Failures ASVS 5.0 V6 - Authentication Credential externalization MITRE ATT&CK 2 techniques across 2 tactics: Persistence, Credential Access The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. Sign in to read
Impact	CVSS score of 9.8 (CRITICAL). Attack characteristics: network attack vector, low complexity, no privileges required, no user interaction not required.
Exploit ScenarioDerived	A remote attacker could gain access using credentials embedded in source code by sending crafted requests to the affected application. No authentication is required to exploit this vulnerability.

Act Now Prioritize within 24-48h. Why: CRITICAL severity.

No patch listed yet 1.4% exploitation probability (EPSS)

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

Alert me

AnalysisAI

A CWE-798: Use of Hard-coded Credentials vulnerability exists in EVlink City (EVC1S22P4 / EVC1S7P4 all versions prior to R8 V3.4.0.1), EVlink Parking (EVW2 / EVF2 / EV.2 all versions prior to R8. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Remove hard-coded credentials, use environment variables or secrets management, rotate exposed credentials immediately.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

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 as Use of Hard-coded Credentials (CWE-798), which allows attackers to gain access using credentials embedded in source code. A CWE-798: Use of Hard-coded Credentials vulnerability exists in EVlink City (EVC1S22P4 / EVC1S7P4 all versions prior to R8 V3.4.0.1), EVlink Parking (EVW2 / EVF2 / EV.2 all versions prior to R8 V3.4.0.1), and EVlink Smart Wallbox (EVB1A all versions prior to R8 V3.4.0.1 ) that could an attacker to gain unauthorized administrative privileges when accessing to the charging station web server. Affected products include: Schneider-Electric Evlink City Evc1S22P4 Firmware, Schneider-Electric Evlink City Evc1S7P4 Firmware, Schneider-Electric Evlink Parking Evw2 Firmware, Schneider-Electric Evlink Parking Evf2 Firmware, Schneider-Electric Evlink Parking Ev.2 Firmware.

Know when Evlink City Evc1S22P4 Firmware gets its next vulnerability

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

Continue with Google Continue with GitHub

No credit card · 7-day full trial

Severity by source

NVD PRIMARY 9.8 CRITICAL

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

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

High

Availability

High

DescriptionNVD

A CWE-798: Use of Hard-coded Credentials vulnerability exists in EVlink City (EVC1S22P4 / EVC1S7P4 all versions prior to R8 V3.4.0.1), EVlink Parking (EVW2 / EVF2 / EV.2 all versions prior to R8 V3.4.0.1), and EVlink Smart Wallbox (EVB1A all versions prior to R8 V3.4.0.1 ) that could an attacker to gain unauthorized administrative privileges when accessing to the charging station web server.

Threat Intelligence Overview

EPSS Score

1.4%

Top 32% 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 CRITICAL

CISA KEV No

Public POC No

EPSS 1.4%

Patch available No

Active threat No

Deciding rule

CRITICAL severity

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

Yes

Human Impact· derived

Medium

Priority Score

Low Medium High Critical

KEV: 0

EPSS: +1

CVSS: +49

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Authentication Bypass CRITICAL

Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.

Affected Products (CPE)NVD

cpe:2.3:o:schneider-electric:evlink_city_evc1s22p4_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:schneider-electric:evlink_city_evc1s7p4_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:schneider-electric:evlink_parking_evw2_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:schneider-electric:evlink_parking_evf2_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:schneider-electric:evlink_parking_ev.2_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:schneider-electric:evlink_smart_wallbox_evb1a_firmware:*:*:*:*:*:*:*:*

More in Evlink City Evc1S22P4 Firmware

View all

CVE-2021-22707 CRITICAL Act Now POC

9.8 Jul 21

A CWE-798: Use of Hard-coded Credentials vulnerability exists in EVlink City (EVC1S22P4 / EVC1S7P4 all versions prior to

CVE-2021-22729 CRITICAL Act Now

9.8 Jul 21

A CWE-259: Use of Hard-coded Password vulnerability exists in EVlink City (EVC1S22P4 / EVC1S7P4 all versions prior to R8

CVE-2021-22727 CRITICAL Act Now

9.8 Jul 21

A CWE-331: Insufficient Entropy vulnerability exists in EVlink City (EVC1S22P4 / EVC1S7P4 all versions prior to R8 V3.4.

CVE-2021-22726 HIGH This Week

8.1 Jul 21

A CWE-918: Server-Side Request Forgery (SSRF) vulnerability exists in EVlink City (EVC1S22P4 / EVC1S7P4 all versions pri

CVE-2021-22774 HIGH This Week

7.5 Jul 21

A CWE-759: Use of a One-Way Hash without a Salt vulnerability exists in EVlink City (EVC1S22P4 / EVC1S7P4 all versions p

CVE-2021-22708 HIGH This Week

7.2 Jul 21

A CWE-347: Improper Verification of Cryptographic Signature vulnerability exists in EVlink City (EVC1S22P4 / EVC1S7P4 al

CVE-2021-22773 MEDIUM This Month

6.5 Jul 21

A CWE-620: Unverified Password Change vulnerability exists in EVlink City (EVC1S22P4 / EVC1S7P4 all versions prior to R8

CVE-2021-22728 MEDIUM This Month

6.5 Jul 21

A CWE-200: Information Exposure vulnerability exists in EVlink City (EVC1S22P4 / EVC1S7P4 all versions prior to R8 V3.4.

CVE-2021-22723 MEDIUM This Month

6.1 Jul 21

A CWE-79: Improper Neutralization of Input During Web Page Generation (Cross-siteScripting) through Cross-Site Request F

CVE-2021-22706 MEDIUM This Month

6.1 Jul 21

A CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability exists in E

CVE-2021-22722 MEDIUM This Month

5.4 Jul 21

A CWE-79: Improper Neutralization of Input During Web Page Generation ('Stored Cross-site Scripting') vulnerability exis

CVE-2021-22721 MEDIUM This Month

5.3 Jul 21

A CWE-200: Information Exposure vulnerability exists in EVlink City (EVC1S22P4 / EVC1S7P4 all versions prior to R8 V3.4.

Same weakness CWE-798 – Use of Hard-coded Credentials

View all

CVE-2016-1560 CRITICAL POC

9.8

CVE-2017-14143 CRITICAL POC

9.8

CVE-2025-14611 HIGH POC

7.1

CVE-2026-22769 CRITICAL

10.0

CVE-2016-5678 CRITICAL POC

9.8

CVE-2017-6558 CRITICAL POC

9.8

CVE-2015-7246 CRITICAL POC

9.8

CVE-2015-4667 CRITICAL POC

9.8

Same technique Authentication Bypass

View all

CVE-2015-3306 CRITICAL POC

10.0

CVE-2023-22515 CRITICAL POC

9.8

CVE-2012-4681 CRITICAL POC

9.8

CVE-2013-2465 CRITICAL POC

9.8

CVE-2011-3544 CRITICAL POC

9.8

CVE-2022-40684 CRITICAL POC

9.8

CVE-2025-61882 CRITICAL POC

9.8

CVE-2024-0012 CRITICAL POC

9.3

References

Advisories & patches

ADVISORY http://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2021-194-06

Search Externally

GitHub PoC

Exploit-DB PacketStorm Snyk Rapid7 Nuclei Templates Trickest PoC

Back