CVE-2026-21718

EUVD-2026-8947
An authentication bypass vulnerability exists in Copeland XWEB Pro 
version 1.12.1 and prior, enabling any attackers to bypass the 
authentication requirement and achieve pre-authenticated code execution 
on the system.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
10 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Affected Products (NVD)
VendorProductVersion
copelandxweb_300d_pro_firmware
𝑥
≤ 1.12.1
copelandxweb_500d_pro_firmware
𝑥
≤ 1.12.1
copelandxweb_500b_pro_firmware
𝑥
≤ 1.12.1
𝑥
= Vulnerable software versions