{"id":"CVE-2026-45811","state":"PUBLISHED","title":"Apache NimBLE: Buffer overflow in socket HCI transport","description":"Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in Apache NimBLE.\nThe HCI socket transport did not check whether a received HCI event would fit the configured event pool before copying it, allowing a buffer overflow. Severity is low: exploitation requires either a misconfigured pool size or a malicious/compromised controller on the other end of the HCI socket link, not over-the-air Bluetooth access.\n\nThis issue affects Apache NimBLE: through 1.9.0.\n\nUsers are recommended to upgrade to version 1.10.0, which fixes the issue.","publishedAt":"2026-07-24T12:09:10.299Z","updatedAt":"2026-07-24T18:14:45.702Z","severity":{"score":7.5,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","source":"CISA-ADP"},"assigner":"apache","products":["Apache Software Foundation Apache NimBLE"],"affected":[{"vendor":"Apache Software Foundation","product":"Apache NimBLE","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"1.9.0","versionType":"semver"}]}],"references":["https://github.com/apache/mynewt-nimble/commit/dcc4e4f026109eecd507de9479bb5019306a4a41","https://lists.apache.org/thread/5mkz68y1py0o6zmxtc3l1o8grtrb78m0","http://www.openwall.com/lists/oss-security/2026/07/24/11"],"weaknesses":["CWE-120"],"ingestedAt":"2026-10-29T20:12:07.131Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/45xxx/CVE-2026-45811.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-45811","state":"PUBLISHED","datePublished":"2026-07-24T12:09:10.299Z","dateUpdated":"2026-07-24T18:14:45.702Z","assignerShortName":"apache","assignerOrgId":"f0158376-9dc2-43b6-827c-5f631a4d8d09","dateReserved":"2026-05-13T08:48:46.370Z"},"containers":{"cna":{"title":"Apache NimBLE: Buffer overflow in socket HCI transport","descriptions":[{"lang":"en","value":"Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in Apache NimBLE.\nThe HCI socket transport did not check whether a received HCI event would fit the configured event pool before copying it, allowing a buffer overflow. Severity is low: exploitation requires either a misconfigured pool size or a malicious/compromised controller on the other end of the HCI socket link, not over-the-air Bluetooth access.\n\nThis issue affects Apache NimBLE: through 1.9.0.\n\nUsers are recommended to upgrade to version 1.10.0, which fixes the issue."}],"affected":[{"vendor":"Apache Software Foundation","product":"Apache NimBLE","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"1.9.0","versionType":"semver"}]}],"references":[{"url":"https://github.com/apache/mynewt-nimble/commit/dcc4e4f026109eecd507de9479bb5019306a4a41","tags":["patch"]},{"url":"https://lists.apache.org/thread/5mkz68y1py0o6zmxtc3l1o8grtrb78m0","tags":["vendor-advisory"]}],"metrics":[{"other":{"content":{"text":"low"},"type":"Textual description of severity"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-120","description":"CWE-120 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"apache","orgId":"f0158376-9dc2-43b6-827c-5f631a4d8d09","dateUpdated":"2026-07-24T12:09:10.299Z"},"credits":[{"lang":"en","type":"reporter","value":"Yicheng Yang, Secsys Lab, Fudan University"}],"source":{"discovery":"UNKNOWN"},"x_generator":{"engine":"Vulnogram 0.2.0"}},"adp":[{"title":"CVE Program Container","references":[{"url":"http://www.openwall.com/lists/oss-security/2026/07/24/11"}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2026-07-24T14:34:43.034Z"}},{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":7.5,"attackVector":"ADJACENT_NETWORK","baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","integrityImpact":"HIGH","userInteraction":"NONE","attackComplexity":"HIGH","availabilityImpact":"HIGH","privilegesRequired":"NONE","confidentialityImpact":"HIGH"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-07-24T18:14:28.703659Z","id":"CVE-2026-45811","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-07-24T18:14:45.702Z"}}]}}}