CVE-2021-22708 A CWE-347: Improper Verification of Cryptographic Signature vulnerability exists in EVlink City (EVC1S22P4 / EVC1S7P4 all versions prior to

High 7.2 Published 21 Jul 2021 Updated 3 Aug 2024

Exploited in the wild: Not known
Fix: None listed

What is CVE-2021-22708?

CVE-2021-22708 is a high-severity vulnerability 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 ), published on 21 Jul 2021.

Official description

A CWE-347: Improper Verification of Cryptographic Signature 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 craft a malicious firmware package and bypass the signature verification mechanism.

Weakness: CWE-347

Which versions are affected by CVE-2021-22708?

It affects 6 products.

Products include Schneider-Electric Evlink City Evc1s22p4 Firmware, Schneider-Electric Evlink City Evc1s7p4 Firmware, Schneider-Electric Evlink Parking Ev.2 Firmware, Schneider-Electric Evlink Parking Evf2 Firmware, Schneider-Electric Evlink Parking Evw2 Firmware, Schneider-Electric Evlink Smart Wallbox Evb1a Firmware.

How do I fix CVE-2021-22708?

No fix has been published for CVE-2021-22708 yet. Limit exposure of the affected software until one is available.

Is CVE-2021-22708 being exploited?

There is no known exploitation of CVE-2021-22708 in the wild and no public exploit code.

Sources

Also known as GHSA-2wrx-q5xx-wffm.