CVE-2026-18886

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-18886", "assignerOrgId": "303448ea-6ef3-4077-ad29-5c9bf253c375", "state": "PUBLISHED", "assignerShortName": "SN", "dateReserved": "2026-08-04T19:02:05.799Z", "datePublished": "2026-08-27T19:00:01.715Z", "dateUpdated": "2026-09-02T22:07:23.647Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "303448ea-6ef3-4077-ad29-5c9bf253c375", "shortName": "SN", "dateUpdated": "2026-09-02T22:07:23.647Z"}, "title": "Unauthenticated Privilege Escalation via System Configuration Image Upload Processor", "affected": [{"vendor": "ServiceNow", "product": "ServiceNow AI Platform", "versions": [{"status": "affected", "version": "0", "lessThan": "Xanadu Patch 11 Hot Fix 7a", "versionType": "custom"}, {"status": "affected", "version": "0", "lessThan": "Yokohama Patch 12 Hot Fix 3b", "versionType": "custom"}, {"status": "affected", "version": "0", "lessThan": "Yokohama Patch 13 Hot Fix 4", "versionType": "custom"}, {"status": "affected", "version": "0", "lessThan": "Zurich Patch 7b Hot Fix 3", "versionType": "custom"}, {"status": "affected", "version": "0", "lessThan": "Zurich Patch 8 Hot Fix 5", "versionType": "custom"}, {"status": "affected", "version": "0", "lessThan": "Zurich Patch 9 Hot Fix 6", "versionType": "customZurich Patch 10 Hot Fix 2m (m-branch)"}, {"status": "affected", "version": "0", "lessThan": "Zurich Patch 10 Hot Fix 2m (m-branch)", "versionType": "custom"}, {"status": "affected", "version": "0", "lessThan": "Zurich Patch 10 Hot Fix 3 (standard)", "versionType": "custom"}, {"status": "affected", "version": "0", "lessThan": "Zurich Patch 11", "versionType": "custom"}, {"status": "affected", "version": "0", "lessThan": "Zurich Patch 12", "versionType": "custom"}, {"status": "affected", "version": "0", "lessThan": "Australia Patch 2 Hot Fix 3", "versionType": "custom"}, {"status": "affected", "version": "0", "lessThan": "Australia Patch 3 Hot Fix 2", "versionType": "custom"}, {"status": "affected", "version": "0", "lessThan": "Australia Patch 3m", "versionType": "custom"}, {"status": "affected", "version": "0", "lessThan": "Australia Patch 4", "versionType": "custom"}, {"status": "affected", "version": "0", "lessThan": "Australia Patch 5", "versionType": "custom"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "ServiceNow has remediated an improper access control vulnerability that was identified in the ServiceNow AI platform. This vulnerability could enable an unauthenticated user, in certain circumstances, to create or modify instance data beyond what was intended, resulting in privilege escalation.\u00a0\n\n\n\n\n\nServiceNow deployed a security update to hosted instances and ServiceNow provided the update to our partners and self-hosted customers. We are not currently aware of exploitation against ServiceNow instances.\u00a0\n\n\n\nWe recommend customers promptly apply appropriate updates or upgrade to a patched release if they have not already done so.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<div><p><span><span>ServiceNow has </span><span>remediated </span><span>a</span><span>n</span><span> </span><span>improper access control </span><span>vulnerability that was </span><span>identified</span><span> in the ServiceNow AI platform. </span><span>This vulnerability could enable an unauthenticated user, in certain circumstances, to create or </span><span>modify</span><span> instance data beyond what was intended, resulting in privilege escalation.</span></span><span>&nbsp;</span></p></div><div><p><span><span>ServiceNow </span><span>deployed </span><span>a security update to hosted </span><span>instances</span><span> and ServiceNow </span><span>provided </span><span>the update to our partners and self-hosted customers. We are not currently aware of </span><span>exploitation </span><span>against ServiceNow instances.&nbsp;</span></span></p><p><span><span>We recommend customers promptly apply </span><span>appropriate updates</span><span> or upgrade to a patched release if they have not already done so.</span></span></p></div>"}]}], "references": [{"url": "https://support.servicenow.com/kb?id=kb_article_view&sysparm_article=KB3152242"}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "subConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "subIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "HIGH", "subAvailabilityImpact": "HIGH", "exploitMaturity": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "version": "4.0", "baseSeverity": "CRITICAL", "baseScore": 10, "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H"}}], "credits": [{"lang": "en", "value": "Kevin Gervot - Assetnote", "type": "finder"}], "source": {"discovery": "UNKNOWN"}, "x_generator": {"engine": "Vulnogram 1.0.5"}}, "adp": [{"problemTypes": [{"descriptions": [{"type": "CWE", "cweId": "CWE-284", "lang": "en", "description": "CWE-284 Improper Access Control"}]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-08-28T00:00:00+00:00", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3", "id": "CVE-2026-18886"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-08-29T03:56:09.659Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-18886", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-08-28T15:40:31.320088Z"}}}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-284", "description": "CWE-284 Improper Access Control"}]}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-08-28T15:40:55.903Z"}}], "cna": {"title": "Unauthenticated Privilege Escalation via System Configuration Image Upload Processor", "source": {"discovery": "UNKNOWN"}, "credits": [{"lang": "en", "type": "finder", "value": "Kevin Gervot - Assetnote"}], "metrics": [{"format": "CVSS", "cvssV4_0": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 10, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "subIntegrityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "subAvailabilityImpact": "HIGH", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "HIGH", "vulnConfidentialityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "affected": [{"vendor": "ServiceNow", "product": "ServiceNow AI Platform", "versions": [{"status": "affected", "version": "0", "lessThan": "Xanadu Patch 11 Hot Fix 7a", "versionType": "custom"}, {"status": "affected", "version": "0", "lessThan": "Yokohama Patch 12 Hot Fix 3b", "versionType": "custom"}, {"status": "affected", "version": "0", "lessThan": "Yokohama Patch 13 Hot Fix 4", "versionType": "custom"}, {"status": "affected", "version": "0", "lessThan": "Zurich Patch 7b Hot Fix 3", "versionType": "custom"}, {"status": "affected", "version": "0", "lessThan": "Zurich Patch 8 Hot Fix 5", "versionType": "custom"}, {"status": "affected", "version": "0", "lessThan": "Zurich Patch 9 Hot Fix 6", "versionType": "customZurich Patch 10 Hot Fix 2m (m-branch)"}, {"status": "affected", "version": "0", "lessThan": "Zurich Patch 10 Hot Fix 2m (m-branch)", "versionType": "custom"}, {"status": "affected", "version": "0", "lessThan": "Zurich Patch 10 Hot Fix 3 (standard)", "versionType": "custom"}, {"status": "affected", "version": "0", "lessThan": "Zurich Patch 11", "versionType": "custom"}, {"status": "affected", "version": "0", "lessThan": "Zurich Patch 12", "versionType": "custom"}, {"status": "affected", "version": "0", "lessThan": "Australia Patch 2 Hot Fix 3", "versionType": "custom"}, {"status": "affected", "version": "0", "lessThan": "Australia Patch 3 Hot Fix 2", "versionType": "custom"}, {"status": "affected", "version": "0", "lessThan": "Australia Patch 3m", "versionType": "custom"}, {"status": "affected", "version": "0", "lessThan": "Australia Patch 4", "versionType": "custom"}, {"status": "affected", "version": "0", "lessThan": "Australia Patch 5", "versionType": "custom"}], "defaultStatus": "unaffected"}], "references": [{"url": "https://support.servicenow.com/kb?id=kb_article_view&sysparm_article=KB3152242"}], "x_generator": {"engine": "Vulnogram 1.0.5"}, "descriptions": [{"lang": "en", "value": "ServiceNow has remediated an improper access control vulnerability that was identified in the ServiceNow AI platform. This vulnerability could enable an unauthenticated user, in certain circumstances, to create or modify instance data beyond what was intended, resulting in privilege escalation.\u00a0\n\n\n\n\n\nServiceNow deployed a security update to hosted instances and ServiceNow provided the update to our partners and self-hosted customers. We are not currently aware of exploitation against ServiceNow instances.\u00a0\n\n\n\nWe recommend customers promptly apply appropriate updates or upgrade to a patched release if they have not already done so.", "supportingMedia": [{"type": "text/html", "value": "<div><p><span><span>ServiceNow has </span><span>remediated </span><span>a</span><span>n</span><span> </span><span>improper access control </span><span>vulnerability that was </span><span>identified</span><span> in the ServiceNow AI platform. </span><span>This vulnerability could enable an unauthenticated user, in certain circumstances, to create or </span><span>modify</span><span> instance data beyond what was intended, resulting in privilege escalation.</span></span><span>&nbsp;</span></p></div><div><p><span><span>ServiceNow </span><span>deployed </span><span>a security update to hosted </span><span>instances</span><span> and ServiceNow </span><span>provided </span><span>the update to our partners and self-hosted customers. We are not currently aware of </span><span>exploitation </span><span>against ServiceNow instances.&nbsp;</span></span></p><p><span><span>We recommend customers promptly apply </span><span>appropriate updates</span><span> or upgrade to a patched release if they have not already done so.</span></span></p></div>", "base64": false}]}], "providerMetadata": {"orgId": "303448ea-6ef3-4077-ad29-5c9bf253c375", "shortName": "SN", "dateUpdated": "2026-09-02T22:07:23.647Z"}}}, "cveMetadata": {"cveId": "CVE-2026-18886", "state": "PUBLISHED", "dateUpdated": "2026-09-02T22:07:23.647Z", "dateReserved": "2026-08-04T19:02:05.799Z", "assignerOrgId": "303448ea-6ef3-4077-ad29-5c9bf253c375", "datePublished": "2026-08-27T19:00:01.715Z", "assignerShortName": "SN"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "ServiceNow AI Platform", "vendor": "ServiceNow", "versions": [{"lessThan": "Xanadu Patch 11 Hot Fix 7a", "status": "affected", "version": "0", "versionType": "custom"}, {"lessThan": "Yokohama Patch 12 Hot Fix 3b", "status": "affected", "version": "0", "versionType": "custom"}, {"lessThan": "Yokohama Patch 13 Hot Fix 4", "status": "affected", "version": "0", "versionType": "custom"}, {"lessThan": "Zurich Patch 7b Hot Fix 3", "status": "affected", "version": "0", "versionType": "custom"}, {"lessThan": "Zurich Patch 8 Hot Fix 5", "status": "affected", "version": "0", "versionType": "custom"}, {"lessThan": "Zurich Patch 9 Hot Fix 6", "status": "affected", "version": "0", "versionType": "customZurich Patch 10 Hot Fix 2m (m-branch)"}, {"lessThan": "Zurich Patch 10 Hot Fix 2m (m-branch)", "status": "affected", "version": "0", "versionType": "custom"}, {"lessThan": "Zurich Patch 10 Hot Fix 3 (standard)", "status": "affected", "version": "0", "versionType": "custom"}, {"lessThan": "Zurich Patch 11", "status": "affected", "version": "0", "versionType": "custom"}, {"lessThan": "Zurich Patch 12", "status": "affected", "version": "0", "versionType": "custom"}, {"lessThan": "Australia Patch 2 Hot Fix 3", "status": "affected", "version": "0", "versionType": "custom"}, {"lessThan": "Australia Patch 3 Hot Fix 2", "status": "affected", "version": "0", "versionType": "custom"}, {"lessThan": "Australia Patch 3m", "status": "affected", "version": "0", "versionType": "custom"}, {"lessThan": "Australia Patch 4", "status": "affected", "version": "0", "versionType": "custom"}, {"lessThan": "Australia Patch 5", "status": "affected", "version": "0", "versionType": "custom"}]}], "source": "psirt@servicenow.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "ServiceNow has remediated an improper access control vulnerability that was identified in the ServiceNow AI platform. This vulnerability could enable an unauthenticated user, in certain circumstances, to create or modify instance data beyond what was intended, resulting in privilege escalation.\u00a0\n\n\n\n\n\nServiceNow deployed a security update to hosted instances and ServiceNow provided the update to our partners and self-hosted customers. We are not currently aware of exploitation against ServiceNow instances.\u00a0\n\n\n\nWe recommend customers promptly apply appropriate updates or upgrade to a patched release if they have not already done so."}], "id": "CVE-2026-18886", "lastModified": "2026-09-03T13:04:35.847", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 10.0, "baseSeverity": "CRITICAL", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "HIGH", "subConfidentialityImpact": "HIGH", "subIntegrityImpact": "HIGH", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "HIGH", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "psirt@servicenow.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-18886", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-08-28T00:00:00+00:00", "version": "2.0.3"}}]}, "published": "2026-08-27T20:17:04.020", "references": [{"source": "psirt@servicenow.com", "url": "https://support.servicenow.com/kb?id=kb_article_view&sysparm_article=KB3152242"}], "sourceIdentifier": "psirt@servicenow.com", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-284"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,Xanadu Patch 11 Hot Fix 7a)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,Yokohama Patch 12 Hot Fix 3b)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,Yokohama Patch 13 Hot Fix 4)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,Zurich Patch 7b Hot Fix 3)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,Zurich Patch 8 Hot Fix 5)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,Zurich Patch 9 Hot Fix 6)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,Zurich Patch 10 Hot Fix 2m (m-branch))"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,Zurich Patch 10 Hot Fix 3 (standard))"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,Zurich Patch 11)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,Zurich Patch 12)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,Australia Patch 2 Hot Fix 3)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,Australia Patch 3 Hot Fix 2)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,Australia Patch 3m)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,Australia Patch 4)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "ServiceNow AI Platform", "source": "cna", "vendor": "ServiceNow"}, "product": "servicenow_ai_platform", "vendor": "servicenow"}], "created": "2026-08-28T05:45:04.435516+00:00", "updated": "2026-09-26T06:00:06.618589+00:00", "vendors": ["servicenow", "servicenow$PRODUCT$servicenow_ai_platform"]}