CVE & CISA-KEV Catalog

CVE-2021-22820

CRITICAL
9.8
CVSS v3
NVD

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)

CWE-613

How to fix

Remediation Available
evlink city evc1s22p4 firmwareNVD
Affected:< 3.4.0.2Fixed in:3.4.0.2CVE-2021-22820derived from NVD
evlink city evc1s7p4 firmwareNVD
Affected:< 3.4.0.2Fixed in:3.4.0.2CVE-2021-22820derived from NVD
evlink parking evf2 firmwareNVD
Affected:< 3.4.0.2Fixed in:3.4.0.2CVE-2021-22820derived from NVD
evlink parking evp2pe firmwareNVD
Affected:< 3.4.0.2Fixed in:3.4.0.2CVE-2021-22820derived from NVD
evlink parking evw2 firmwareNVD
Affected:< 3.4.0.2Fixed in:3.4.0.2CVE-2021-22820derived from NVD
evlink smart wallbox evb1a firmwareNVD
Affected:< 3.4.0.2Fixed in:3.4.0.2CVE-2021-22820derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
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

Exploit Intelligence

1.08%probability of exploitation in 30 days
61stpercentile

Moderate risk: more likely to be exploited than 61% of all known CVEs.

References

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CVE-2021-22820 severity badge

Markdown

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HTML

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.