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ExploitedNot in CISA KEV yetFix available

CVE-2021-22707

Exploitation confirmed. First attested on 2024-02-14 by GCVE · kevintel, GCVE · shadowserver.

  • Published2021-07-21
  • Fixed inr8_v3.4.0.1
  • WeaknessCWE-798

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

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 allow an attacker to issue unauthorized commands to the charging station web server with administrative privileges.

Timeline

dates in UTC
  1. 2021-07-2115:15CVE publishedNVD
  2. 2024-02-1400:45Listed as exploited by GCVEGCVE
  3. 2024-02-1400:45Exploitation first reportedGCVE

Observed activity

isMalicious corpus · updated 2026-11-03 21:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2021-22707?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2021-22707?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Schneider-electric evlink city evc1s22p4 firmwareversion to verify
BranchAffectedFixed in
—< r8_v3.4.0.1r8_v3.4.0.1
Schneider-electric evlink city evc1s7p4 firmwareversion to verify
BranchAffectedFixed in
—< r8_v3.4.0.1r8_v3.4.0.1
Schneider-electric evlink parking ev.2 firmwareversion to verify
BranchAffectedFixed in
—< r8_v3.4.0.1r8_v3.4.0.1

3 more products in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

  1. Update Schneider-electric evlink city evc1s22p4 firmware to r8_v3.4.0.1

Advisories and patches

Detection

read 2026-11-02 22:42 UTC
Nuclei template
available
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub
Metasploit modules
none listed
Metasploit Framework

Sources

  • GCVEexploitation2024-02-14
  • NVDCVSS 3.19.8read 2026-10-23
  • NVDCVSS 2.010read 2026-10-23
  • CNAweakness (CWE)CWE-798known since 2026-10-23
  • FIRST EPSSEPSS score64.6 %read 2026-11-02
  • ProjectDiscoverydetectionread 2026-11-02

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
2021-07-21
Last Modified
2026-06-17
NVD status
Modified

Frequently asked questions

What is CVE-2021-22707?

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 allow an attacker to issue unauthorized commands to the charging station web server with administrative privileges.

Is CVE-2021-22707 actively exploited?

Active exploitation of CVE-2021-22707 has not been confirmed. Its EPSS score was 64.6% on 2026-11-03, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-22707?

CVE-2021-22707 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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