HOMEVULNERABILITIESCVE-2021-22820
CRITICAL

CVE-2021-22820

CWE-613Published: January 28, 2022· Updated: Jun 17, 2026

9.8
CVSS v3.1

Official 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)

NVD Source

Technical Analysis

CVE-2021-22820 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

schneider-electric12 product(s)
evlink city evc1s22p4 firmwareevlink city evc1s22p4evlink city evc1s7p4 firmwareevlink city evc1s7p4evlink parking evw2 firmwareevlink parking evw2evlink parking evf2 firmwareevlink parking evf2evlink parking evp2pe firmwareevlink parking evp2peevlink smart wallbox evb1a firmwareevlink smart wallbox evb1a
Source: NVD CPE · 12 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2021-348-02
PATCHhttps://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2021-348-02

All References (2)

→
https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2021-348-02Patch · Vendor Advisory
→
https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2021-348-02Patch · Vendor Advisory

Quick Facts

CVE IDCVE-2021-22820
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessCWE-613
CISA KEVNo
Affected1 vendor(s)
PublishedJan 28, 2022

Related CVEs (CWE-613)

CVE-2021-24019
9.8
CVE-2021-25979
9.8
CVE-2021-37333
9.8
CVE-2021-38823
9.8
CVE-2021-40849
9.8
CVE-2021-25985
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2021-22820 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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