CVE-2021-22820
9.8 · CRITICALOverview
CVE-2021-22820 is a critical-severity vulnerability affecting schneider-electric evlink_city_evc1s22p4_firmware. It was published on January 28, 2022 and has a CVSS 3.1 base score of 9.8 (CRITICAL).
This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
A CWE-614 Insufficient Session Expiration vulnerability exists that could allow an attacker to maintain an unauthorized access over a hijacked session to the charger station web server even after the legitimate user account holder has changed his password. Affected Products: EVlink City EVC1S22P4 / EVC1S7P4 (All versions prior to R8 V3.4.0.2 ), EVlink Parking EVW2 / EVF2 / EVP2PE (All versions prior to R8 V3.4.0.2), and EVlink Smart Wallbox EVB1A (All versions prior to R8 V3.4.0.2)
Remediation
Check the references section for vendor advisories and patches from schneider-electric. Update evlink_city_evc1s22p4_firmware to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| schneider-electric | evlink_city_evc1s22p4_firmware | >= 0, < 3.4.0.2 | Affected |
| schneider-electric | evlink_city_evc1s7p4_firmware | >= 0, < 3.4.0.2 | Affected |
| schneider-electric | evlink_parking_evw2_firmware | >= 0, < 3.4.0.2 | Affected |
| schneider-electric | evlink_parking_evf2_firmware | >= 0, < 3.4.0.2 | Affected |
| schneider-electric | evlink_parking_evp2pe_firmware | >= 0, < 3.4.0.2 | Affected |
| schneider-electric | evlink_smart_wallbox_evb1a_firmware | >= 0, < 3.4.0.2 | Affected |
Frequently Asked Questions
What is CVE-2021-22820?
CVE-2021-22820 is a critical-severity vulnerability affecting schneider-electric evlink_city_evc1s22p4_firmware. It was published on January 28, 2022 and has a CVSS 3.1 base score of 9.8 (CRITICAL).
How severe is CVE-2021-22820?
This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2021-22820?
Check the references section for vendor advisories and patches from schneider-electric. Update evlink_city_evc1s22p4_firmware to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2021-22820?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-22820 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
Automated penetration testing that runs continuously, not just quarterly.
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Browser-based exploitation validates findings with real proof-of-concept.
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