CVE-2026-21718

CVE Enrichment

CVSS: 9.8 CRITICAL
EPSS: 0.69%
EPSS Percentile: 53.14%
CISA KEV: Not listed

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.

Technical Details

CVSS Version: 3.1
CNA / NVD Source: [email protected]
Published: 27-Feb-2026 08:16
Last Modified: 17-Jun-2026 17:18
EPSS Date: 2026-11-09
CWE: CWE-327

CVSS Vector


            CVSS:3.1                            AV:N /
                            AC:L /
                            PR:N /
                            UI:N /
                            S:U /
                            C:H /
                            I:H /
                            A:H

CNA Products / Version Status

Copeland · Copeland XWEB 300D PRO Source: CNA · [email protected]
Default status: unaffected

0 ≤ version ≤ 1.12.1 — affected (custom)
Copeland · Copeland XWEB 500B PRO Source: CNA · [email protected]
Default status: unaffected

0 ≤ version ≤ 1.12.1 — affected (custom)
Copeland · Copeland XWEB 500D PRO Source: CNA · [email protected]
Default status: unaffected

0 ≤ version ≤ 1.12.1 — affected (custom)

Affected Products / Versions

copeland / xweb_300d_pro_firmware Source: NVD CPE · affected
Version / affected range: * · through (inclusive) 1.12.1
cpe:2.3:o:copeland:xweb_300d_pro_firmware:*:*:*:*:*:*:*:*
copeland / xweb_500d_pro_firmware Source: NVD CPE · affected
Version / affected range: * · through (inclusive) 1.12.1
cpe:2.3:o:copeland:xweb_500d_pro_firmware:*:*:*:*:*:*:*:*
copeland / xweb_500b_pro_firmware Source: NVD CPE · affected
Version / affected range: * · through (inclusive) 1.12.1
cpe:2.3:o:copeland:xweb_500b_pro_firmware:*:*:*:*:*:*:*:*

References

Last enrichment sync: 10-Nov-2026 07:31
Sources: NVD · FIRST EPSS · CISA KEV
Latest successful provider update; providers refresh independently.

Reported Context (1)

CVE-2026-21718 Copeland XWEB PRO 1.12.1 and earlier Authentication bypass (CVSS 10) 1.13 (ICSA-26-057-10) Refrigeration Controller Attacks Spread Across Countries, Attribution Remains Unclear

CVE (6)

Threat Actors (5)

MITRE ATT&CK (8)

Vendors (4)

Products (10)

Tools (1)

Industries (6)

Countries (9)

Note: Related entities, including threat actors, malware, CVEs, MITRE ATT&CK techniques, vendors, products, tools, countries, and industries, are shown when they appear in the same reporting. Their presence does not necessarily mean they were targeted, compromised, vulnerable, responsible for the activity, or directly involved in the incident.