CVE-2026-21718 (GCVE-0-2026-21718)

Vulnerability from cvelistv5 – Published: 2026-02-27 00:34 – Updated: 2026-02-27 00:34
VLAI?
Title
Copeland XWEB and XWEB Pro Use of a Broken or Risky Cryptographic Algorithm
Summary
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.
Severity ?
10 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CWE
Assigner
References
Impacted products
Vendor Product Version
Copeland Copeland XWEB 300D PRO Affected: 0 , ≤ 1.12.1 (custom)
Create a notification for this product.
Credits
Amir Zaltzman and Noam Moshe of Claroty Team82 reported this vulnerability to CISA.
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Copeland XWEB 300D PRO",
          "vendor": "Copeland",
          "versions": [
            {
              "lessThanOrEqual": "1.12.1",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "Copeland XWEB 500D PRO",
          "vendor": "Copeland",
          "versions": [
            {
              "lessThanOrEqual": "1.12.1",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "Copeland XWEB 500B PRO",
          "vendor": "Copeland",
          "versions": [
            {
              "lessThanOrEqual": "1.12.1",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Amir Zaltzman and Noam Moshe of Claroty Team82 reported this vulnerability to CISA."
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "An authentication bypass vulnerability exists in Copeland XWEB Pro \nversion 1.12.1 and prior, enabling any attackers to bypass the \nauthentication requirement and achieve pre-authenticated code execution \non the system."
            }
          ],
          "value": "An authentication bypass vulnerability exists in Copeland XWEB Pro \nversion 1.12.1 and prior, enabling any attackers to bypass the \nauthentication requirement and achieve pre-authenticated code execution \non the system."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 10,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-327",
              "description": "CWE-327",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-02-27T00:34:55.895Z",
        "orgId": "7d14cffa-0d7d-4270-9dc0-52cabd5a23a6",
        "shortName": "icscert"
      },
      "references": [
        {
          "url": "https://webapps.copeland.com/Dixell/Pages/SystemSoftwareUpdate"
        },
        {
          "url": "https://www.cisa.gov/news-events/ics-advisories/icsa-26-057-10"
        },
        {
          "url": "https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-057-10.json"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "Copeland has provided a fix for the vulnerabilities and recommends users\n update the XWEB Pro to the latest version by going to their software \nupdate page \n\u003ca target=\"_blank\" rel=\"nofollow\" href=\"https://webapps.copeland.com/Dixell/Pages/SystemSoftwareUpdate\"\u003ehttps://webapps.copeland.com/Dixell/Pages/SystemSoftwareUpdate\u003c/a\u003e in the \nsections dedicated to the different XWEBPRO models page.\n\n\u003cbr\u003e"
            }
          ],
          "value": "Copeland has provided a fix for the vulnerabilities and recommends users\n update the XWEB Pro to the latest version by going to their software \nupdate page \n https://webapps.copeland.com/Dixell/Pages/SystemSoftwareUpdate  in the \nsections dedicated to the different XWEBPRO models page."
        },
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "Alternatively, a user logged into an XWEB Pro with internet access can \nupdate XWEB Pro directly from Copeland servers via the menu SYSTEM -- \nUpdates | Network.\n\n\u003cbr\u003e"
            }
          ],
          "value": "Alternatively, a user logged into an XWEB Pro with internet access can \nupdate XWEB Pro directly from Copeland servers via the menu SYSTEM -- \nUpdates | Network."
        }
      ],
      "source": {
        "advisory": "ICSA-26-057-10",
        "discovery": "EXTERNAL"
      },
      "title": "Copeland XWEB and XWEB Pro Use of a Broken or Risky Cryptographic Algorithm",
      "x_generator": {
        "engine": "Vulnogram 0.5.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "7d14cffa-0d7d-4270-9dc0-52cabd5a23a6",
    "assignerShortName": "icscert",
    "cveId": "CVE-2026-21718",
    "datePublished": "2026-02-27T00:34:55.895Z",
    "dateReserved": "2026-02-05T19:05:16.863Z",
    "dateUpdated": "2026-02-27T00:34:55.895Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-21718\",\"sourceIdentifier\":\"ics-cert@hq.dhs.gov\",\"published\":\"2026-02-27T01:16:18.073\",\"lastModified\":\"2026-02-27T01:16:18.073\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"An authentication bypass vulnerability exists in Copeland XWEB Pro \\nversion 1.12.1 and prior, enabling any attackers to bypass the \\nauthentication requirement and achieve pre-authenticated code execution \\non the system.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"ics-cert@hq.dhs.gov\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H\",\"baseScore\":10.0,\"baseSeverity\":\"CRITICAL\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"CHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":3.9,\"impactScore\":6.0}]},\"weaknesses\":[{\"source\":\"ics-cert@hq.dhs.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-327\"}]}],\"references\":[{\"url\":\"https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-057-10.json\",\"source\":\"ics-cert@hq.dhs.gov\"},{\"url\":\"https://webapps.copeland.com/Dixell/Pages/SystemSoftwareUpdate\",\"source\":\"ics-cert@hq.dhs.gov\"},{\"url\":\"https://www.cisa.gov/news-events/ics-advisories/icsa-26-057-10\",\"source\":\"ics-cert@hq.dhs.gov\"}]}}"
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.