{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-90782", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-09-13T12:01:31.544Z", "datePublished": "2026-09-13T12:22:01.806Z", "dateUpdated": "2026-09-13T12:22:01.806Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-09-13T12:22:01.806Z"}, "datePublic": "2026-08-16T00:00:00.000Z", "title": "S2OPC through 1.7.3 NULL Pointer Dereference in alloc_notification_message_items()", "descriptions": [{"lang": "en", "value": "S2OPC through 1.7.3 contains a null pointer dereference in msg_subscription_publish_bs__alloc_notification_message_items() where a failed allocation for DataChangeNotification is overwritten by a successful allocation for EventNotificationList. Attackers can trigger heap allocation failures on sessions with both data-change and event notifications to cause the server process to terminate."}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "NULL Pointer Dereference", "cweId": "CWE-476", "type": "CWE"}]}], "affected": [{"defaultStatus": "unaffected", "vendor": "Systerel", "product": "S2OPC", "repo": "https://gitlab.com/systerel/S2OPC", "versions": [{"version": "0", "lessThanOrEqual": "1.7.3", "status": "affected", "versionType": "custom"}, {"version": "8848f051eed069b107ae7cb16a346d6f6386a8f5", "status": "unaffected", "versionType": "git"}]}], "metrics": [{"format": "CVSS", "cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H", "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH", "baseScore": 5.3, "baseSeverity": "MEDIUM"}}, {"format": "CVSS", "cvssV4_0": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "LOW", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 6, "baseSeverity": "MEDIUM"}}], "references": [{"url": "https://gitlab.com/systerel/S2OPC/-/issues/1815", "tags": ["issue-tracking"], "name": "GitLab issue 1815"}, {"url": "https://gitlab.com/systerel/S2OPC/-/commit/8848f051eed069b107ae7cb16a346d6f6386a8f5", "tags": ["patch"], "name": "Patch Commit"}, {"url": "https://gitlab.com/systerel/S2OPC/-/blob/S2OPC_Toolkit_1.7.3/src/ClientServer/services/b2c/msg_subscription_publish_bs.c#L106-L147", "tags": ["technical-description"], "name": "Status clobbering and NULL dereference at S2OPC_Toolkit_1.7.3"}, {"url": "https://gitlab.com/systerel/S2OPC", "tags": ["product"]}, {"url": "https://gitlab.com/systerel/S2OPC/-/merge_requests/1862", "tags": ["patch"], "name": "Merge request !1862"}, {"name": "VulnCheck Advisory: S2OPC through 1.7.3 NULL Pointer Dereference in alloc_notification_message_items()", "tags": ["third-party-advisory"], "url": "https://www.vulncheck.com/advisories/s2opc-through-1.7.3-null-pointer-dereference-in-alloc-notification-message-items"}], "credits": [{"lang": "en", "value": "Harsh Raj Singhania", "type": "finder"}], "x_generator": {"engine": "vulncheck-endgame"}}}}

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