CVE-2026-20797 (GCVE-0-2026-20797)
Vulnerability from cvelistv5 – Published: 2026-02-27 01:03 – Updated: 2026-03-02 14:25
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)
CWE
- WE-121
Assigner
References
Impacted products
| Vendor | Product | Version | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Copeland | Copeland XWEB 300D PRO |
Affected:
0 , ≤ 1.12.1
(custom)
|
||||||||||||
|
||||||||||||||
Credits
Amir Zaltzman and Noam Moshe of Claroty Team82 reported this vulnerability to CISA.
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-20797",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-03-02T14:25:26.397993Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-03-02T14:25:33.427Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"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": "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."
}
],
"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": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "ADJACENT_NETWORK",
"availabilityImpact": "LOW",
"baseScore": 4.3,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"description": "WE-121",
"lang": "en"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-02-27T01:03:18.783Z",
"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 Stack-based Buffer Overflow",
"x_generator": {
"engine": "Vulnogram 0.5.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "7d14cffa-0d7d-4270-9dc0-52cabd5a23a6",
"assignerShortName": "icscert",
"cveId": "CVE-2026-20797",
"datePublished": "2026-02-27T01:03:18.783Z",
"dateReserved": "2026-02-05T16:47:16.578Z",
"dateUpdated": "2026-03-02T14:25:33.427Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"nvd": "{\"cve\":{\"id\":\"CVE-2026-20797\",\"sourceIdentifier\":\"ics-cert@hq.dhs.gov\",\"published\":\"2026-02-27T02:16:18.343\",\"lastModified\":\"2026-02-27T23:10:35.547\",\"vulnStatus\":\"Analyzed\",\"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.\"},{\"lang\":\"es\",\"value\":\"Existe un desbordamiento de b\u00fafer basado en pila en una ruta de API de XWEB Pro versi\u00f3n 1.12.1 y anteriores, lo que permite a atacantes no autenticados causar corrupci\u00f3n de pila y la terminaci\u00f3n del programa.\"}],\"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},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":9.8,\"baseSeverity\":\"CRITICAL\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":3.9,\"impactScore\":5.9}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-787\"}]}],\"configurations\":[{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:copeland:xweb_300d_pro_firmware:*:*:*:*:*:*:*:*\",\"versionEndIncluding\":\"1.12.1\",\"matchCriteriaId\":\"BF93AA67-7ABF-45C8-8376-7A28F7D65464\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:copeland:xweb_300d_pro:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"AEA10B9B-531A-4775-B32D-AC743D696126\"}]}]},{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:copeland:xweb_500d_pro_firmware:*:*:*:*:*:*:*:*\",\"versionEndIncluding\":\"1.12.1\",\"matchCriteriaId\":\"088F312E-06DF-4B90-A478-A6B5A39DE0F0\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:copeland:xweb_500d_pro:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"A524988E-E22F-4B0F-AEE6-46B3F103989C\"}]}]},{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:copeland:xweb_500b_pro_firmware:*:*:*:*:*:*:*:*\",\"versionEndIncluding\":\"1.12.1\",\"matchCriteriaId\":\"E13AD164-C82A-4D6C-84C0-83EB8B0A611C\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:copeland:xweb_500b_pro:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"1707F67B-6365-4065-812C-7CC596C6CFF1\"}]}]}],\"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\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://webapps.copeland.com/Dixell/Pages/SystemSoftwareUpdate\",\"source\":\"ics-cert@hq.dhs.gov\",\"tags\":[\"Product\"]},{\"url\":\"https://www.cisa.gov/news-events/ics-advisories/icsa-26-057-10\",\"source\":\"ics-cert@hq.dhs.gov\",\"tags\":[\"Third Party Advisory\",\"US Government Resource\"]}]}}",
"vulnrichment": {
"containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-20797\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-03-02T14:25:26.397993Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-03-02T14:25:29.811Z\"}}], \"cna\": {\"title\": \"Copeland XWEB and XWEB Pro Stack-based Buffer Overflow\", \"source\": {\"advisory\": \"ICSA-26-057-10\", \"discovery\": \"EXTERNAL\"}, \"credits\": [{\"lang\": \"en\", \"type\": \"finder\", \"value\": \"Amir Zaltzman and Noam Moshe of Claroty Team82 reported this vulnerability to CISA.\"}], \"metrics\": [{\"format\": \"CVSS\", \"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 4.3, \"attackVector\": \"ADJACENT_NETWORK\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"LOW\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"NONE\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"GENERAL\"}]}], \"affected\": [{\"vendor\": \"Copeland\", \"product\": \"Copeland XWEB 300D PRO\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"versionType\": \"custom\", \"lessThanOrEqual\": \"1.12.1\"}], \"defaultStatus\": \"unaffected\"}, {\"vendor\": \"Copeland\", \"product\": \"Copeland XWEB 500D PRO\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"versionType\": \"custom\", \"lessThanOrEqual\": \"1.12.1\"}], \"defaultStatus\": \"unaffected\"}, {\"vendor\": \"Copeland\", \"product\": \"Copeland XWEB 500B PRO\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"versionType\": \"custom\", \"lessThanOrEqual\": \"1.12.1\"}], \"defaultStatus\": \"unaffected\"}], \"solutions\": [{\"lang\": \"en\", \"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.\", \"supportingMedia\": [{\"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\", \"base64\": false}]}, {\"lang\": \"en\", \"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.\", \"supportingMedia\": [{\"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\", \"base64\": false}]}], \"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\"}], \"x_generator\": {\"engine\": \"Vulnogram 0.5.0\"}, \"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.\", \"supportingMedia\": [{\"type\": \"text/html\", \"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.\", \"base64\": false}]}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"description\": \"WE-121\"}]}], \"providerMetadata\": {\"orgId\": \"7d14cffa-0d7d-4270-9dc0-52cabd5a23a6\", \"shortName\": \"icscert\", \"dateUpdated\": \"2026-02-27T01:03:18.783Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2026-20797\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-03-02T14:25:33.427Z\", \"dateReserved\": \"2026-02-05T16:47:16.578Z\", \"assignerOrgId\": \"7d14cffa-0d7d-4270-9dc0-52cabd5a23a6\", \"datePublished\": \"2026-02-27T01:03:18.783Z\", \"assignerShortName\": \"icscert\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
Loading…
Loading…
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.
Loading…
Loading…