Vulnerability · Published Feb 27, 2026 · Assigned by icscert
CVE-2026-21718Copeland XWEB and XWEB Pro Use of a Broken or Risky Cryptographic Algorithm
Critical 10.0
In plain English
A critical-severity broken cryptography in Copeland XWEB 300D PRO from Copeland. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 53% of all known vulnerabilities).
Severity (CVSS 3.1)10.0Critical
Exploit odds (30 days)0.7%top 47.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
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 products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Copeland | Copeland XWEB 300D PRO | 0 – through 1.12.1 |
| Copeland | Copeland XWEB 500D PRO | 0 – through 1.12.1 |
| Copeland | Copeland XWEB 500B PRO | 0 – through 1.12.1 |
Weakness: CWE-327 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H