{"id":"CVE-2026-86206","published":"2026-09-05T19:17:50Z","modified":"2026-09-08T10:35:05Z","title":"Access control filter bypass allows unauthorised access to APIs","vendor":"N-able","product":"N-central","tier":"core","eol":null,"affectedVersions":[{"vendor":"N-able","product":"N-central","versions":["< 2026.3.1.13"]}],"description":{"text":"A vulnerability in the N-central internal API access control filter allows unauthorised access to internal APIs. This is fixed in N-central 2026.3 HF3 and 2026.4","provenance":"source","from":"CVE.org"},"summary":null,"cvss":{"score":6.9,"severity":"MEDIUM","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N","provenance":"source","from":"CVE.org CNA"},"epss":{"score":0.01118,"percentile":0.66086,"date":"2026-10-30","provenance":"source"},"kev":null,"vulncheckKev":{"dateAdded":"2026-09-10","exploitedFirstSeen":"2026-09-10","ransomware":false,"evidence":[{"url":"https://previdian.com/CVE-2026-86206","date":"2026-09-10"}],"evidenceTotal":1,"provenance":"source"},"exploited":true,"otx":{"pulseCount":7,"pulses":[{"name":"Citrix NetScaler ADC/Gateway Zero-Day RCEs CVE-2026-88771 & CVE-2026-88772","url":"https://otx.alienvault.com/pulse/6abb55037b78a15718f242eb","created":"2026-09-29"},{"name":"N - able N - central Authentication Bypass Flaws CVE - 2026 - 86206 and CVE - 2026 - 86207 Enable Unauthenticated Administrator Account Creation","url":"https://otx.alienvault.com/pulse/6aa27c19e354e616e305d3be","created":"2026-09-10"},{"name":"N-able N-central CVE-2026-86218 Pre-Auth RCE + 2026.3 Hotfix Chain","url":"https://otx.alienvault.com/pulse/6aa248d7b572022303efaa78","created":"2026-09-10"},{"name":"N-able N-central Pre-Auth RCE CVE-2026-86218 (KEV) + Auth Bypass Chain","url":"https://otx.alienvault.com/pulse/6aa0f71b294931dc38d97a30","created":"2026-09-09"},{"name":"N-able N-central CVE-2026-86218 Pre-Auth RCE + 2026.3 Hotfix Chain","url":"https://otx.alienvault.com/pulse/6a9fa6085d2a4cd84f2bc74d","created":"2026-09-08"},{"name":"N-able N-central Pre-Auth RCE CVE-2026-86218 (HF4) + Related Auth Bypass","url":"https://otx.alienvault.com/pulse/6a9fa5a6d4e44db2fabce7fd","created":"2026-09-08"},{"name":"⚡ Weekly Recap: Chrome 0-Day, Router Hijacks, Coder Supply Chain Attack and More","url":"https://otx.alienvault.com/pulse/6a9eeca6579a625a9b9a23ed","created":"2026-09-07"}],"provenance":"machine"},"cwes":[{"id":"CWE-791","name":"Incomplete Filtering of Special Elements"}],"references":[{"url":"https://documentation.n-able.com/N-central/Release_Notes/GA/Content/N-central_2026.3_HF3_Release_Notes.htm","tags":["release-notes"]},{"url":"https://me.n-able.com/s/security-advisory/aArVy0000002LTNKA2/cve202686206-access-control-filter-bypass-allows-unauthorised-access-to-apis","tags":["vendor-advisory"]}],"techniques":[],"reports":[],"affected":[],"advisories":[],"euvd":{"id":"EUVD-2026-72023","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-72023","exploited":false,"exploitedSince":null,"provenance":"source"},"exploits":[],"exploitSources":{"nuclei":[{"id":"CVE-2026-86206","name":"N-able N-central - Access Control Bypass via Path Confusion and Forwarded Header Spoofing","severity":"critical","path":"http/cves/2026/CVE-2026-86206.yaml","url":"https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-86206.yaml"}],"provenance":"source"},"exploitRefs":[],"flow":[],"timeline":[{"date":"2026-09-05","kind":"published","label":"Published (CVE.org)","url":"https://www.cve.org/CVERecord?id=CVE-2026-86206","provenance":"source"},{"date":"2026-09-10","kind":"exploited-reported","label":"Exploitation first reported (VulnCheck KEV evidence)","url":"https://previdian.com/CVE-2026-86206","provenance":"source"}],"speed":{"daysToPublicExploit":null,"firstExploitFrom":null,"daysToKev":null},"priority":{"score":70.1,"factors":[{"name":"In a KEV catalog","points":35.0,"detail":"listed in VulnCheck KEV"},{"name":"Recent KEV listing","points":10.0,"detail":"added 51 days ago"},{"name":"Known ransomware use","points":0.0,"detail":"not known"},{"name":"EPSS percentile","points":13.22,"detail":"percentile 0.6609"},{"name":"Named in threat reports","points":0.0,"detail":"0 reports"},{"name":"Public exploit code","points":5.0,"detail":"1 nuclei template"},{"name":"Mentioned in OTX pulses","points":2.05,"detail":"7 pulses"},{"name":"CVSS severity","points":4.83,"detail":"base score 6.9"},{"name":"End-of-life product","points":0.0,"detail":"supported or unknown"}]}}