CVE-2026-20151

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-20151", "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633", "state": "PUBLISHED", "assignerShortName": "cisco", "dateReserved": "2025-10-08T11:59:15.385Z", "datePublished": "2026-04-01T16:29:13.496Z", "dateUpdated": "2026-04-02T03:56:09.678Z"}, "containers": {"cna": {"title": "Cisco Smart Software Manager On-Prem Privilege Escalation Vulnerability", "metrics": [{"format": "cvssV3_1", "cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N", "baseScore": 7.3, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "NONE"}}], "descriptions": [{"lang": "en", "value": "A vulnerability in the web interface of Cisco Smart Software Manager On-Prem (SSM On-Prem) could allow an authenticated, remote attacker to elevate privileges on an affected system.\r\n\r\nThis vulnerability is due to the improper transmission of sensitive user information. An attacker could exploit this vulnerability by sending a crafted message to an affected Cisco SSM On-Prem host and retrieving session credentials from subsequent status messages. A successful exploit could allow the attacker to elevate privileges on the affected system from low to administrative.\r\nTo exploit this vulnerability, the attacker must have valid credentials for a user account with at least the role of System User.\r\nNote: This vulnerability exposes information only about users who logged in to the Cisco SSM On-Prem host using the web interface and who are currently logged in. SSH sessions are not affected."}], "references": [{"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cssm-priv-esc-xRAnOuO8", "name": "cisco-sa-cssm-priv-esc-xRAnOuO8"}], "exploits": [{"lang": "en", "value": "The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory."}], "source": {"advisory": "cisco-sa-cssm-priv-esc-xRAnOuO8", "discovery": "INTERNAL", "defects": ["CSCwr86065"]}, "problemTypes": [{"descriptions": [{"lang": "en", "description": "Insertion of Sensitive Information Into Sent Data", "type": "cwe", "cweId": "CWE-201"}]}], "affected": [{"vendor": "Cisco", "product": "Cisco Smart Software Manager On-Prem", "versions": [{"version": "7-202001", "status": "affected"}, {"version": "8-202004", "status": "affected"}, {"version": "8-202006", "status": "affected"}, {"version": "8-202012", "status": "affected"}, {"version": "8-202010", "status": "affected"}, {"version": "8-202008", "status": "affected"}, {"version": "9-202201", "status": "affected"}, {"version": "8-202102", "status": "affected"}, {"version": "8-202105", "status": "affected"}, {"version": "8-202108", "status": "affected"}, {"version": "8-202112", "status": "affected"}, {"version": "8-202201", "status": "affected"}, {"version": "8-202206", "status": "affected"}, {"version": "8-202212", "status": "affected"}, {"version": "8-202302", "status": "affected"}, {"version": "8-202303", "status": "affected"}, {"version": "8-202304", "status": "affected"}, {"version": "8-202308", "status": "affected"}, {"version": "8-202401", "status": "affected"}, {"version": "8-202404", "status": "affected"}, {"version": "9-202406", "status": "affected"}, {"version": "9-202407", "status": "affected"}, {"version": "9-202410", "status": "affected"}, {"version": "9-202412", "status": "affected"}, {"version": "9-202501", "status": "affected"}, {"version": "9-202502", "status": "affected"}, {"version": "9-202504", "status": "affected"}, {"version": "9-202507", "status": "affected"}, {"version": "9-202510", "status": "affected"}], "defaultStatus": "unknown"}], "providerMetadata": {"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633", "shortName": "cisco", "dateUpdated": "2026-04-01T16:29:13.496Z"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-04-01T00:00:00+00:00", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3", "id": "CVE-2026-20151"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-04-02T03:56:09.678Z"}}]}}

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{"affected": [{"affectedData": [{"defaultStatus": "unknown", "product": "Cisco Smart Software Manager On-Prem", "vendor": "Cisco", "versions": [{"status": "affected", "version": "7-202001"}, {"status": "affected", "version": "8-202004"}, {"status": "affected", "version": "8-202006"}, {"status": "affected", "version": "8-202012"}, {"status": "affected", "version": "8-202010"}, {"status": "affected", "version": "8-202008"}, {"status": "affected", "version": "9-202201"}, {"status": "affected", "version": "8-202102"}, {"status": "affected", "version": "8-202105"}, {"status": "affected", "version": "8-202108"}, {"status": "affected", "version": "8-202112"}, {"status": "affected", "version": "8-202201"}, {"status": "affected", "version": "8-202206"}, {"status": "affected", "version": "8-202212"}, {"status": "affected", "version": "8-202302"}, {"status": "affected", "version": "8-202303"}, {"status": "affected", "version": "8-202304"}, {"status": "affected", "version": "8-202308"}, {"status": "affected", "version": "8-202401"}, {"status": "affected", "version": "8-202404"}, {"status": "affected", "version": "9-202406"}, {"status": "affected", "version": "9-202407"}, {"status": "affected", "version": "9-202410"}, {"status": "affected", "version": "9-202412"}, {"status": "affected", "version": "9-202501"}, {"status": "affected", "version": "9-202502"}, {"status": "affected", "version": "9-202504"}, {"status": "affected", "version": "9-202507"}, {"status": "affected", "version": "9-202510"}]}], "source": "psirt@cisco.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:cisco:smart_software_manager_on-prem:*:*:*:*:*:*:*:*", "matchCriteriaId": "D2F0EA7E-9F9D-4A2A-B64D-8335F4A169E3", "versionEndExcluding": "9-202601", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A vulnerability in the web interface of Cisco Smart Software Manager On-Prem (SSM On-Prem) could allow an authenticated, remote attacker to elevate privileges on an affected system.\r\n\r\nThis vulnerability is due to the improper transmission of sensitive user information. An attacker could exploit this vulnerability by sending a crafted message to an affected Cisco SSM On-Prem host and retrieving session credentials from subsequent status messages. A successful exploit could allow the attacker to elevate privileges on the affected system from low to administrative.\r\nTo exploit this vulnerability, the attacker must have valid credentials for a user account with at least the role of System User.\r\nNote: This vulnerability exposes information only about users who logged in to the Cisco SSM On-Prem host using the web interface and who are currently logged in. SSH sessions are not affected."}, {"lang": "es", "value": "Una vulnerabilidad en la interfaz web de Cisco Smart Software Manager On-Prem (SSM On-Prem) podr\u00eda permitir a un atacante remoto y autenticado elevar privilegios en un sistema afectado.\n\nEsta vulnerabilidad se debe a la transmisi\u00f3n indebida de informaci\u00f3n sensible del usuario. Un atacante podr\u00eda explotar esta vulnerabilidad enviando un mensaje manipulado a un host de Cisco SSM On-Prem afectado y recuperando credenciales de sesi\u00f3n de mensajes de estado posteriores. Un exploit exitoso podr\u00eda permitir al atacante elevar privilegios en el sistema afectado de bajo a administrativo.\nPara explotar esta vulnerabilidad, el atacante debe tener credenciales v\u00e1lidas para una cuenta de usuario con al menos el rol de Usuario del Sistema.\nNota: Esta vulnerabilidad expone informaci\u00f3n solo sobre usuarios que iniciaron sesi\u00f3n en el host de Cisco SSM On-Prem usando la interfaz web y que est\u00e1n actualmente conectados. Las sesiones SSH no se ven afectadas."}], "id": "CVE-2026-20151", "lastModified": "2026-10-26T22:10:00.163", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.3, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 2.1, "impactScore": 5.2, "source": "psirt@cisco.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-20151", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-04-01T00:00:00+00:00", "version": "2.0.3"}}]}, "published": "2026-04-01T17:28:31.097", "references": [{"source": "psirt@cisco.com", "tags": ["Vendor Advisory"], "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cssm-priv-esc-xRAnOuO8"}], "sourceIdentifier": "psirt@cisco.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-201"}], "source": "psirt@cisco.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "7-202001"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "8-202004"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "8-202006"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "8-202012"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "8-202010"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "8-202008"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "9-202201"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "8-202102"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "8-202105"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "8-202108"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "8-202112"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "8-202201"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "8-202206"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "8-202212"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "8-202302"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "8-202303"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "8-202304"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "8-202308"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "8-202401"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "8-202404"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "9-202406"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "9-202407"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "9-202410"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "9-202412"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "9-202501"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "9-202502"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "9-202504"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "9-202507"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "9-202510"}}], "enrichment": {"confidence": 92.0, "confidence_source": "matching", "scores": [{"score": 92.0, "source": "matching"}]}, "original": {"product": "Cisco Smart Software Manager On-Prem", "source": "cna", "vendor": "Cisco"}, "product": "smart_software_manager_on-prem", "vendor": "cisco"}], "analysis": {"en": {"generated_at": "2026-04-02T02:43:47.145599+00:00", "value": {"mitigation_remediation": ["Apply the Cisco Smart Software Manager On\u2011Prem update that resolves the privilege escalation issue.", "Verify that the update has been deployed on all affected hosts.", "Revoke or limit the use of the System User role for accounts that do not require remote web interface access.", "Restrict network access to the SSM On\u2011Prem web interface to trusted hosts or subnets.", "Monitor system logs for unusual privilege escalation activity after patching."], "summary": {"action": "Immediate Patch", "impact": "Privilege Escalation"}, "threat_synthesis": {"affected_systems": "The vulnerability is present in Cisco Smart Software Manager On\u2011Prem. All installations of this product that have not applied the vendor\u2019s security update are affected. Specific version ranges are not listed in the advisory, so any exposed instance remains vulnerable until patched.", "description_and_impact": "A flaw in the web interface of Cisco Smart Software Manager On\u2011Prem lets an authenticated remote attacker send a crafted request that causes the system to disclose session credentials. With those credentials the attacker can raise their privileges from a standard System User to full administrative rights, enabling complete control of the host and all managed devices.", "risk_and_exploitability": "The CVSS base score of 7.3 classifies this as high severity. Exploitability requires a valid user account with at least System User rights, which are typically granted to monitored users. The attack vector is remote over the web interface, and the vulnerability is not currently listed in CISA\u2019s KEV catalog, indicating no documented large\u2011scale exploitation yet. Nevertheless, the ability to gain administrative rights warrants prompt action."}}}}, "created": "2026-04-02T07:48:24.863169+00:00", "updated": "2026-04-03T08:58:28.681078+00:00", "vendors": ["cisco", "cisco$PRODUCT$smart_software_manager_on-prem"]}