CVE-2026-20797 (GCVE-0-2026-20797)

Vulnerability from cvelistv5 – Published: 2026-02-27 01:03 – Updated: 2026-02-27 01:03
VLAI?
Title
Copeland XWEB and XWEB Pro Stack-based Buffer Overflow
Summary
A stack based buffer overflow exists in an API route of XWEB Pro version 1.12.1 and prior, enabling unauthenticated attackers to cause stack corruption and a termination of the program.
Severity ?
4.3 (Medium)
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CWE
  • WE-121
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
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      "affected": [
        {
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          "product": "Copeland XWEB 300D PRO",
          "vendor": "Copeland",
          "versions": [
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        },
        {
          "defaultStatus": "unaffected",
          "product": "Copeland XWEB 500D PRO",
          "vendor": "Copeland",
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          "value": "Amir Zaltzman and Noam Moshe of Claroty Team82 reported this vulnerability to CISA."
        }
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        }
      ],
      "metrics": [
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          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "ADJACENT_NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 4.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
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            "userInteraction": "NONE",
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        "dateUpdated": "2026-02-27T01:03:18.783Z",
        "orgId": "7d14cffa-0d7d-4270-9dc0-52cabd5a23a6",
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      "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": [
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          "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"
            }
          ],
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        },
        {
          "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 Stack-based Buffer Overflow",
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    "assignerShortName": "icscert",
    "cveId": "CVE-2026-20797",
    "datePublished": "2026-02-27T01:03:18.783Z",
    "dateReserved": "2026-02-05T16:47:16.578Z",
    "dateUpdated": "2026-02-27T01:03:18.783Z",
    "state": "PUBLISHED"
  },
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    "nvd": "{\"cve\":{\"id\":\"CVE-2026-20797\",\"sourceIdentifier\":\"ics-cert@hq.dhs.gov\",\"published\":\"2026-02-27T02:16:18.343\",\"lastModified\":\"2026-02-27T02:16:18.343\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"A stack based buffer overflow exists in an API route of XWEB Pro version\\n 1.12.1 and prior, enabling unauthenticated attackers to cause stack \\ncorruption and a termination of the program.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"ics-cert@hq.dhs.gov\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L\",\"baseScore\":4.3,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"ADJACENT_NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"LOW\"},\"exploitabilityScore\":2.8,\"impactScore\":1.4}]},\"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\"}]}}"
  }
}


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Detection rules are retrieved from Rulezet.