by Kastro
Paper/Archive/CVE-2026-21718

CVE-2026-21718

Copeland Copeland XWEB 300D PRO — Copeland XWEB and XWEB Pro Use of a Broken or Risky Cryptographic Algorithm

EPSS 0.7%CVSS 10.0
critical.is priorityof 100
41
CVSS 10.0 (CNA)10.0 / 10 × 3030.0Not in CISA KEV+300.0EPSS percentile 52.9.529 × 2010.6No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
Copeland XWEB 300D PRO≤ 1.12.1–CNA
Copeland XWEB 500D PRO≤ 1.12.1–CNA
Copeland XWEB 500B PRO≤ 1.12.1–CNA

Scores by source

icscert (CNA)10.0CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

refwebapps.copeland.com/Dixell/Pages/SystemSoftwareUpdaterefcisa.gov/news-events/ics-advisories/icsa-26-057-10refgithub.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-057-10.json