This issue affects N-central: through 2026.1.
\"}], \"value\": \"Authentication bypass using an alternate path or channel vulnerability in N-able N-central allows Authentication Bypass.\\n\\nThis issue affects N-central: through 2026.1.\"}], \"impacts\": [{\"capecId\": \"CAPEC-115\", \"descriptions\": [{\"lang\": \"en\", \"value\": \"CAPEC-115 Authentication Bypass\"}]}], \"metrics\": [{\"cvssV4_0\": {\"Automatable\": \"NOT_DEFINED\", \"Recovery\": \"NOT_DEFINED\", \"Safety\": \"NOT_DEFINED\", \"attackComplexity\": \"HIGH\", \"attackRequirements\": \"NONE\", \"attackVector\": \"NETWORK\", \"baseScore\": 8.2, \"baseSeverity\": \"HIGH\", \"exploitMaturity\": \"NOT_DEFINED\", \"privilegesRequired\": \"NONE\", \"providerUrgency\": \"NOT_DEFINED\", \"subAvailabilityImpact\": \"NONE\", \"subConfidentialityImpact\": \"NONE\", \"subIntegrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"valueDensity\": \"NOT_DEFINED\", \"vectorString\": \"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N\", \"version\": \"4.0\", \"vulnAvailabilityImpact\": \"NONE\", \"vulnConfidentialityImpact\": \"HIGH\", \"vulnIntegrityImpact\": \"NONE\", \"vulnerabilityResponseEffort\": \"NOT_DEFINED\"}, \"format\": \"CVSS\", \"scenarios\": [{\"lang\": \"en\", \"value\": \"GENERAL\"}]}], \"problemTypes\": [{\"descriptions\": [{\"cweId\": \"CWE-288\", \"description\": \"CWE-288 Authentication bypass using an alternate path or channel\", \"lang\": \"en\", \"type\": \"CWE\"}]}], \"providerMetadata\": {\"dateUpdated\": \"2026-08-01T19:59:30.913Z\", \"orgId\": \"a5532a13-c4dd-4202-bef1-e0b8f2f8d12b\", \"shortName\": \"N-able\"}, \"references\": [{\"url\": \"https://uptime.n-able.com/\"}], \"source\": {\"discovery\": \"UNKNOWN\"}, \"title\": \"Unauthenticated administrative account takeover\", \"x_generator\": {\"engine\": \"Vulnogram 1.0.4\"}}}, \"cveMetadata\": {\"assignerOrgId\": \"a5532a13-c4dd-4202-bef1-e0b8f2f8d12b\", \"assignerShortName\": \"N-able\", \"cveId\": \"CVE-2026-18556\", \"datePublished\": \"2026-08-01T19:59:30.913Z\", \"dateReserved\": \"2026-08-01T11:54:51.376Z\", \"dateUpdated\": \"2026-08-05T03:56:07.447Z\", \"state\": \"PUBLISHED\"}, \"dataType\": \"CVE_RECORD\", \"dataVersion\": \"5.2\"}"},{"alert":0,"cve":"CVE-2026-18556","id":3513,"kind":"epss","observed_at":1793665375,"payload":"{\"date\": \"2026-11-02\", \"epss\": 0.07882, \"percentile\": 0.9471}"},{"alert":1,"cve":"CVE-2026-18556","id":107,"kind":"kev","observed_at":1793665375,"payload":"{\"cveID\": \"CVE-2026-18556\", \"cwes\": [\"CWE-288\"], \"dateAdded\": \"2026-08-04\", \"dueDate\": \"2026-08-07\", \"forensicTriage\": \"Yes\", \"knownRansomwareCampaignUse\": \"Unknown\", \"notes\": \"https://uptime.n-able.com/ ; https://status.n-able.com/2026/08/02/n-central-2026-3-hotfix-1-mitigation-for-cve-2026-18577/ ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-18556\", \"product\": \"N-central\", \"requiredAction\": \"Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA\\u2019s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA\\u2019s \\u201cForensics Triage Requirements\\u201d (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.\", \"shortDescription\": \"N-able N-central contains an authentication bypass using an alternate path or channel that allows for authentication bypass.\", \"vendorProject\": \"N-able\", \"vulnerabilityName\": \"N-able N-central Authentication Bypass Using an Alternate Path or Channel Vulnerability\"}"}],"record":{"affected":[{"defaultStatus":"unaffected","product":"N-central","vendor":"N-able","versions":[{"lessThanOrEqual":"2026.1","status":"affected","version":"0","versionType":"custom"}]}],"cna":{"containers":{"adp":[{"metrics":[{"other":{"content":{"id":"CVE-2026-18556","options":[{"Exploitation":"active"},{"Automatable":"yes"},{"Technical Impact":"total"}],"role":"CISA Coordinator","timestamp":"2026-08-04T00:00:00+00:00","version":"2.0.3"},"type":"ssvc"}},{"other":{"content":{"dateAdded":"2026-08-04","reference":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-18556"},"type":"kev"}}],"providerMetadata":{"dateUpdated":"2026-08-05T03:56:07.447Z","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP"},"references":[{"tags":["vendor-advisory"],"url":"https://www.n-able.com/blog/n-central-security-update-august-2-2026"},{"tags":["government-resource"],"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-18556"}],"timeline":[{"lang":"en","time":"2026-08-04T00:00:00.000Z","value":"CVE-2026-18556 added to CISA KEV"}],"title":"CISA ADP Vulnrichment"}],"cna":{"affected":[{"defaultStatus":"unaffected","product":"N-central","vendor":"N-able","versions":[{"lessThanOrEqual":"2026.1","status":"affected","version":"0","versionType":"custom"}]}],"datePublic":"2026-08-01T19:56:00.000Z","descriptions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"Authentication bypass using an alternate path or channel vulnerability in N-able N-central allows Authentication Bypass.This issue affects N-central: through 2026.1.
"}],"value":"Authentication bypass using an alternate path or channel vulnerability in N-able N-central allows Authentication Bypass.\n\nThis issue affects N-central: through 2026.1."}],"impacts":[{"capecId":"CAPEC-115","descriptions":[{"lang":"en","value":"CAPEC-115 Authentication Bypass"}]}],"metrics":[{"cvssV4_0":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"HIGH","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":8.2,"baseSeverity":"HIGH","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"NONE","vulnerabilityResponseEffort":"NOT_DEFINED"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-288","description":"CWE-288 Authentication bypass using an alternate path or channel","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-08-01T19:59:30.913Z","orgId":"a5532a13-c4dd-4202-bef1-e0b8f2f8d12b","shortName":"N-able"},"references":[{"url":"https://uptime.n-able.com/"}],"source":{"discovery":"UNKNOWN"},"title":"Unauthenticated administrative account takeover","x_generator":{"engine":"Vulnogram 1.0.4"}}},"cveMetadata":{"assignerOrgId":"a5532a13-c4dd-4202-bef1-e0b8f2f8d12b","assignerShortName":"N-able","cveId":"CVE-2026-18556","datePublished":"2026-08-01T19:59:30.913Z","dateReserved":"2026-08-01T11:54:51.376Z","dateUpdated":"2026-08-05T03:56:07.447Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"cna_checked":1794133200,"cve":"CVE-2026-18556","description":"Authentication bypass using an alternate path or channel vulnerability in N-able N-central allows Authentication Bypass.\n\nThis issue affects N-central: through 2026.1.","epss":{"date":"2026-11-12","epss":0.43884,"percentile":0.98767},"epss_checked":1794522003,"first_seen":1793665375,"kev":{"cveID":"CVE-2026-18556","cwes":["CWE-288"],"dateAdded":"2026-08-04","dueDate":"2026-08-07","forensicTriage":"Yes","knownRansomwareCampaignUse":"Unknown","notes":"https://uptime.n-able.com/ ; https://status.n-able.com/2026/08/02/n-central-2026-3-hotfix-1-mitigation-for-cve-2026-18577/ ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-18556","product":"N-central","requiredAction":"Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA\u2019s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA\u2019s \u201cForensics Triage Requirements\u201d (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.","shortDescription":"N-able N-central contains an authentication bypass using an alternate path or channel that allows for authentication bypass.","vendorProject":"N-able","vulnerabilityName":"N-able N-central Authentication Bypass Using an Alternate Path or Channel Vulnerability"},"kev_checked":1794522003,"products":"N-able N-central","references":["https://uptime.n-able.com/","https://www.n-able.com/blog/n-central-security-update-august-2-2026","https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-18556"],"score":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"HIGH","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":8.2,"baseSeverity":"HIGH","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","provider":"N-able","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"NONE","vulnerabilityResponseEffort":"NOT_DEFINED"},"solutions":"","state":"PUBLISHED","title":"Unauthenticated administrative account takeover","updated_at":1794500401,"workarounds":""},"sources":[]}