CVE-2021-22820: schneider-electric evlink_city_evc1s22p4_firmware Insufficient Session Expiration

Vulnerability summary

CVE-2021-22820 is a critical (CVSS 9.8) Insufficient Session Expiration vulnerability in schneider-electric evlink_city_evc1s22p4_firmware. EPSS estimates a 1.08% chance of exploitation in the next 30 days, higher than 64.7% of scored vulnerabilities.

Timeline

1. 28-01-2022
   PublishedVulnerability first disclosed.
2. 03-08-2024
   Last modifiedVulnerability information updated.

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-613Insufficient Session ExpirationAccording to WASC, "Insufficient Session Expiration is when a web site permits an attacker to reuse old session credentials or session IDs for authorization."