{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-45542","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-05-12T17:48:47.879Z","datePublished":"2026-06-10T00:34:53.238Z","dateUpdated":"2026-06-10T15:16:16.137Z"},"containers":{"cna":{"title":"ESF-IDF: Heap buffer overflow in protocomm Security2 over Bluetooth","problemTypes":[{"descriptions":[{"cweId":"CWE-122","lang":"en","description":"CWE-122: Heap-based Buffer Overflow","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"ADJACENT_NETWORK","availabilityImpact":"HIGH","baseScore":7.1,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H","version":"3.1"}}],"references":[{"name":"https://github.com/espressif/esp-idf/security/advisories/GHSA-9r76-858f-v6jh","tags":["x_refsource_CONFIRM"],"url":"https://github.com/espressif/esp-idf/security/advisories/GHSA-9r76-858f-v6jh"},{"name":"https://github.com/espressif/esp-idf/commit/0ea58d79845ad674d0358d5de246015a68c4cb4f","tags":["x_refsource_MISC"],"url":"https://github.com/espressif/esp-idf/commit/0ea58d79845ad674d0358d5de246015a68c4cb4f"},{"name":"https://github.com/espressif/esp-idf/commit/56c3e385611e63162d0f2f8504ac4ae2ccfccef0","tags":["x_refsource_MISC"],"url":"https://github.com/espressif/esp-idf/commit/56c3e385611e63162d0f2f8504ac4ae2ccfccef0"},{"name":"https://github.com/espressif/esp-idf/commit/71eb2dbe6aaef830719ecac8edf409e2992b64b2","tags":["x_refsource_MISC"],"url":"https://github.com/espressif/esp-idf/commit/71eb2dbe6aaef830719ecac8edf409e2992b64b2"},{"name":"https://github.com/espressif/esp-idf/commit/9b4cacf9cbc69379972de6a2247fcf5af9240961","tags":["x_refsource_MISC"],"url":"https://github.com/espressif/esp-idf/commit/9b4cacf9cbc69379972de6a2247fcf5af9240961"},{"name":"https://github.com/espressif/esp-idf/commit/a2f4554f10ba075c98cbc67464db096ba32497cf","tags":["x_refsource_MISC"],"url":"https://github.com/espressif/esp-idf/commit/a2f4554f10ba075c98cbc67464db096ba32497cf"},{"name":"https://github.com/espressif/esp-idf/commit/f5d24a7e919bc5f447091479656b86da6762a103","tags":["x_refsource_MISC"],"url":"https://github.com/espressif/esp-idf/commit/f5d24a7e919bc5f447091479656b86da6762a103"}],"affected":[{"vendor":"espressif","product":"esp-idf","versions":[{"version":"= 5.2.6","status":"affected"},{"version":"= 5.3.5","status":"affected"},{"version":"= 5.4.4","status":"affected"},{"version":"= 5.5.4","status":"affected"},{"version":"= 6.0","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-06-10T00:34:53.238Z"},"descriptions":[{"lang":"en","value":"ESF-IDF is the Espressif Internet of Things (IOT) Development Framework. In versions 5.2.6, 5.3.5, 5.4.4, 5.5.4, and 6.0, a heap buffer overflow exists in the Security Scheme 2 (SRP6a) session-setup path of the protocomm component. The first-phase handler (handle_session_command0() in components/protocomm/src/security/security2.c) trusts the length of a client-supplied protobuf field for the SRP6a username and copies it into a buffer whose size is derived from a narrower destination type. The resulting truncation-versus-copy asymmetry corrupts the heap when an oversized value is supplied. This issue has been patched in versions 5.2.7, 5.3.6, 5.4.5, 5.5.5, and 6.0.1."}],"source":{"advisory":"GHSA-9r76-858f-v6jh","discovery":"UNKNOWN"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-06-10T15:16:06.919477Z","id":"CVE-2026-45542","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-06-10T15:16:16.137Z"}}]}}