{"cve":{"cve_id":"CVE-2026-45160","is_kev":false,"kev_date_added":null,"kev_vendor_project":null,"kev_product":null,"kev_vulnerability_name":null,"kev_short_description":null,"kev_required_action":null,"kev_due_date":null,"kev_known_ransomware":null,"kev_notes":null,"kev_cwes":null,"epss_score":0.00246,"epss_percentile":0.15627,"epss_as_of":"2026-06-23","description":"ESF-IDF is the Espressif Internet of Things (IOT) Development Framework. In versions 5.2.7, 5.3.5, 5.4.4, 5.5.4, and 6.0.1, an out-of-bounds read flaw exists in the DHCP server option parser (parse_options() in components/lwip/apps/dhcpserver/dhcpserver.c) shipped with ESP-IDF's lwIP component. The parser walks the BOOTP/DHCP options field without validating that each option's length byte and declared payload length stay within the received packet buffer. A crafted DHCP request can cause the parser to read past the end of the options buffer into adjacent heap memory. The issue affects the DHCP server used by ESP-IDF's SoftAP and any configuration where the device runs as a DHCP server on a local network. This issue has been patched in versions 5.2.8, 5.3.6, 5.4.5, 5.5.5, and 6.0.2.","published_at":"2026-06-10T00:26:34.381000Z","last_modified_at":null,"cvss_v3_score":6.5,"cvss_v3_vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cvss_v3_severity":"MEDIUM","cvss_v4_score":null,"cvss_v4_vector":null,"cvss_v4_severity":null,"ssvc_decision":null,"ssvc_exploitation":null,"ssvc_automatable":null,"ssvc_technical_impact":null,"cwes":["CWE-125"],"nvd_references":["https://github.com/espressif/esp-idf/security/advisories/GHSA-g764-gwc3-75m5","https://github.com/espressif/esp-idf/commit/2bf4dd12002dbae60a4b21abff010ecb2b8ee82b","https://github.com/espressif/esp-idf/commit/2da2db43fd7e0bcff9e7b95f54f388296bb6f911","https://github.com/espressif/esp-idf/commit/8b4b5d5301815198d177974ffc24848f47748248","https://github.com/espressif/esp-idf/commit/9f713dbc94982d917f2d12964b233cd9efa4aeba","https://github.com/espressif/esp-idf/commit/d51b1076092487e533eadf8b48c9c8579d3a6712","https://github.com/espressif/esp-idf/commit/fba5f995436a3e3139f768b6d8f1a74d5ce1d318"],"vuln_status":null,"trending_score":null,"is_trending":false,"has_trended":false,"trended_number_one":false,"trending_peak_score":null,"trending_peak_rank":null,"started_trending_at":null,"trended_number_one_at":null,"summary_generated":null,"summary_generated_at":null,"summary_model":null,"created_at":"2026-06-24T00:09:39.878444Z","updated_at":"2026-06-28T23:30:30.835547Z"},"effective_severity":"MEDIUM","badges":[],"impact_analysis":[],"cvss_v3_decoded":{"version":"3.1","metrics":[{"metric":"AV","name":"Attack Vector","value":"A","value_label":"Adjacent"},{"metric":"AC","name":"Attack Complexity","value":"L","value_label":"Low"},{"metric":"PR","name":"Privileges Required","value":"N","value_label":"None"},{"metric":"UI","name":"User Interaction","value":"N","value_label":"None"},{"metric":"S","name":"Scope","value":"U","value_label":"Unchanged"},{"metric":"C","name":"Confidentiality","value":"N","value_label":"None"},{"metric":"I","name":"Integrity","value":"N","value_label":"None"},{"metric":"A","name":"Availability","value":"H","value_label":"High"}]},"cvss_v4_decoded":{"version":null,"metrics":[]},"affected":[{"vendor_slug":"espressif","vendor_name":"espressif","product_slug":"esp-idf","product_name":"esp-idf","version_start":"= 5.2.7","version_start_inclusive":true,"version_end":"= 5.2.7","version_end_inclusive":true,"cpe23_uri":"cve5:espressif:esp-idf:= 5.2.7:= 5.2.7"},{"vendor_slug":"espressif","vendor_name":"espressif","product_slug":"esp-idf","product_name":"esp-idf","version_start":"= 5.3.5","version_start_inclusive":true,"version_end":"= 5.3.5","version_end_inclusive":true,"cpe23_uri":"cve5:espressif:esp-idf:= 5.3.5:= 5.3.5"},{"vendor_slug":"espressif","vendor_name":"espressif","product_slug":"esp-idf","product_name":"esp-idf","version_start":"= 5.4.4","version_start_inclusive":true,"version_end":"= 5.4.4","version_end_inclusive":true,"cpe23_uri":"cve5:espressif:esp-idf:= 5.4.4:= 5.4.4"},{"vendor_slug":"espressif","vendor_name":"espressif","product_slug":"esp-idf","product_name":"esp-idf","version_start":"= 5.5.4","version_start_inclusive":true,"version_end":"= 5.5.4","version_end_inclusive":true,"cpe23_uri":"cve5:espressif:esp-idf:= 5.5.4:= 5.5.4"},{"vendor_slug":"espressif","vendor_name":"espressif","product_slug":"esp-idf","product_name":"esp-idf","version_start":"= 6.0.1","version_start_inclusive":true,"version_end":"= 6.0.1","version_end_inclusive":true,"cpe23_uri":"cve5:espressif:esp-idf:= 6.0.1:= 6.0.1"}],"exploit_refs":[],"news":[],"references":[{"url":"https://github.com/espressif/esp-idf/security/advisories/GHSA-g764-gwc3-75m5","source_type":"VENDOR_ADVISORY","tags":["advisory"]},{"url":"https://github.com/espressif/esp-idf/commit/2bf4dd12002dbae60a4b21abff010ecb2b8ee82b","source_type":"PATCH","tags":["patch"]},{"url":"https://github.com/espressif/esp-idf/commit/2da2db43fd7e0bcff9e7b95f54f388296bb6f911","source_type":"PATCH","tags":["patch"]},{"url":"https://github.com/espressif/esp-idf/commit/8b4b5d5301815198d177974ffc24848f47748248","source_type":"PATCH","tags":["patch"]},{"url":"https://github.com/espressif/esp-idf/commit/9f713dbc94982d917f2d12964b233cd9efa4aeba","source_type":"PATCH","tags":["patch"]},{"url":"https://github.com/espressif/esp-idf/commit/d51b1076092487e533eadf8b48c9c8579d3a6712","source_type":"PATCH","tags":["patch"]},{"url":"https://github.com/espressif/esp-idf/commit/fba5f995436a3e3139f768b6d8f1a74d5ce1d318","source_type":"PATCH","tags":["patch"]}],"timeline":[{"type":"published","at":"2026-06-10T00:26:34.381000Z","label":"CVE published","source":null},{"type":"cvss_changed","at":"2026-06-28T17:54:34.804808Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:54:34.804808Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:54:34.804808Z","label":"CVSS score revised","source":"cvelistv5"}]}