CVE-2021-22727

9.8 CRITICAL 1% exploit odds Fix listed Other Device

What it is

A CWE-331: Insufficient Entropy 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 allow an attacker to gain unauthorized access to the charging station web server

At a glance

Exploitability: Can be exploited over the network without logging in. High risk of data exposure, data tampering, service disruption.
Exploit odds: 1.4% chance of exploitation in the next 30 days (EPSS).
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2021-07-21 15:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-17 03:37 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 1.4% in the next 30 days (EPSS).
Severity: 9.8 CRITICAL (CVSS).
Fix: a patch or advisory is linked.

Details

Published: 2021-07-21 15:15 UTC
Last modified: 2026-06-17 03:37 UTC
Exploit probability: 1.4% · EPSS, next 30 days
Weakness: CWE-331
Record status: Modified

Affected

schneider-electric Evlink City evc1s22p4 Firmware < r8_v3.4.0.1
schneider-electric Evlink City evc1s7p4 Firmware < r8_v3.4.0.1
schneider-electric Evlink Parking evw2 Firmware < r8_v3.4.0.1
schneider-electric Evlink Parking evf2 Firmware < r8_v3.4.0.1
schneider-electric Evlink Parking ev.2 Firmware < r8_v3.4.0.1
schneider-electric Evlink Smart Wallbox evb1a Firmware < r8_v3.4.0.1

Attack profile CVSS 3.1 · 9.8

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None
Scope: Unchanged
Confidentiality: High
Integrity: High
Availability: High

Raw vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2021-22727.md and follow it. Check whether this project is affected by CVE-2021-22727. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

· More options · Status badge

Download Square Reddit

Fix and advisories

References

NVD record · CVE.org record