{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2025-3756", "assignerOrgId": "2b718523-d88f-4f37-9bbd-300c20644bf9", "state": "PUBLISHED", "assignerShortName": "ABB", "dateReserved": "2025-04-17T10:42:33.414Z", "datePublished": "2026-04-13T17:11:08.412Z", "dateUpdated": "2026-04-13T18:03:41.437Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "2b718523-d88f-4f37-9bbd-300c20644bf9", "shortName": "ABB", "dateUpdated": "2026-04-13T17:11:08.412Z"}, "title": "Denial of Service Vulnerabilities in System 800xA, Symphony\u00ae Plus IEC 61850", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-1284", "description": "CWE-1284 Improper validation of specified quantity in input", "type": "CWE"}]}], "affected": [{"vendor": "ABB", "product": "AC800M (System 800xA)", "modules": ["CI868"], "versions": [{"status": "affected", "version": "6.0.0x", "lessThanOrEqual": "6.0.0303.0", "versionType": "custom"}, {"status": "affected", "version": "6.1.0x", "lessThanOrEqual": "6.1.0031.0", "versionType": "custom"}, {"status": "affected", "version": "6.1.1x", "lessThanOrEqual": "6.1.1004.0", "versionType": "custom"}, {"status": "affected", "version": "6.1.1x", "lessThanOrEqual": "6.1.1202.0", "versionType": "custom"}, {"status": "affected", "version": "6.2.0x", "lessThanOrEqual": "6.2.0006.0", "versionType": "custom"}], "defaultStatus": "unaffected"}, {"vendor": "ABB", "product": "Symphony Plus SD Series", "modules": ["CI850"], "versions": [{"status": "affected", "version": "A_0", "versionType": "custom"}, {"status": "affected", "version": "A_1", "versionType": "custom"}, {"status": "affected", "version": "A_2.003", "versionType": "custom"}, {"status": "affected", "version": "A_3.005", "versionType": "custom"}, {"status": "affected", "version": "A_4.001", "versionType": "custom"}, {"status": "affected", "version": "B_0.005", "versionType": "custom"}], "defaultStatus": "unaffected"}, {"vendor": "ABB", "product": "Symphony Plus MR (Melody Rack)", "modules": ["PM 877"], "versions": [{"status": "affected", "version": "3.10", "lessThanOrEqual": "3.52", "versionType": "custom"}], "defaultStatus": "unaffected"}, {"vendor": "ABB", "product": "S+ Operations", "versions": [{"status": "affected", "version": "2.1", "versionType": "custom"}, {"status": "affected", "version": "2.2", "versionType": "custom"}, {"status": "affected", "version": "2.3", "versionType": "custom"}, {"status": "affected", "version": "3.3", "versionType": "custom"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "A vulnerability exists in the command handling of the IEC 61850 communication stack included in the product revisions listed as affected in this CVE. 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Note: This vulnerability does not impact on the overall availability and functionality of the S+ Operations node, only the 61850 communication function.\n\n\u00a0 \u00a0\n\n\n\nThis issue affects AC800M (System 800xA):\u00a0from 6.0.0x through 6.0.0303.0, from 6.1.0x through 6.1.0031.0, from 6.1.1x through 6.1.1004.0, from 6.1.1x through 6.1.1202.0, from 6.2.0x through 6.2.0006.0; Symphony Plus SD Series: A_0, A_1, A_2.003, A_3.005, A_4.001, B_0.005; Symphony Plus MR (Melody Rack): from 3.10 through 3.52; S+ Operations: 2.1, 2.2, 2.3, 3.3.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<div><div>A vulnerability exists in the command handling of the IEC 61850 communication stack included in the product revisions listed as affected in this CVE. 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An attacker with access to IEC 61850 networks could exploit the vulnera bility by using a specially crafted 61850 packet, forcing the communication interfaces of the PM 877, CI850 and CI868 modules into fault mode or causing unavailability of the S+ Operations 61850 connectivity, resulting in a denial-of-service situation.\u00a0\n\n\n\n\nThe System 800xA IEC61850 Connect is not affected. Note: This vulnerability does not impact on the overall availability and functionality of the S+ Operations node, only the 61850 communication function.\n\n\u00a0 \u00a0\n\n\n\nThis issue affects AC800M (System 800xA):\u00a0from 6.0.0x through 6.0.0303.0, from 6.1.0x through 6.1.0031.0, from 6.1.1x through 6.1.1004.0, from 6.1.1x through 6.1.1202.0, from 6.2.0x through 6.2.0006.0; Symphony Plus SD Series: A_0, A_1, A_2.003, A_3.005, A_4.001, B_0.005; Symphony Plus MR (Melody Rack): from 3.10 through 3.52; S+ Operations: 2.1, 2.2, 2.3, 3.3.", "supportingMedia": [{"type": "text/html", "value": "<div><div>A vulnerability exists in the command handling of the IEC 61850 communication stack included in the product revisions listed as affected in this CVE. 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Note: This vulnerability does not impact on the overall availability and functionality of the S+ Operations node, only the 61850 communication function.</div><div>&nbsp; &nbsp;</div></div><p>This issue affects AC800M (System 800xA):&nbsp;<span>from 6.0.0x through 6.0.0303.0, from 6.1.0x through 6.1.0031.0, from 6.1.1x through 6.1.1004.0, from 6.1.1x through 6.1.1202.0, from 6.2.0x through 6.2.0006.0; Symphony Plus SD Series: A_0, A_1, A_2.003, A_3.005, A_4.001, B_0.005; Symphony Plus MR (Melody Rack): from 3.10 through 3.52; S+ Operations: 2.1, 2.2, 2.3, 3.3.</span></p>", "base64": false}]}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-1284", "description": "CWE-1284 Improper validation of specified quantity in input"}]}], "providerMetadata": {"orgId": "2b718523-d88f-4f37-9bbd-300c20644bf9", "shortName": "ABB", "dateUpdated": "2026-04-13T17:11:08.412Z"}}}, "cveMetadata": {"cveId": "CVE-2025-3756", "state": "PUBLISHED", "dateUpdated": "2026-04-13T18:03:41.437Z", "dateReserved": "2025-04-17T10:42:33.414Z", "assignerOrgId": "2b718523-d88f-4f37-9bbd-300c20644bf9", "datePublished": "2026-04-13T17:11:08.412Z", "assignerShortName": "ABB"}, "dataVersion": "5.2"}

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