{"cve":{"cve_id":"CVE-2025-5688","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":0.00305,"epss_percentile":0.21983,"epss_as_of":"2026-06-23","description":"We have identified a buffer overflow issue allowing out-of-bounds write when processing LLMNR or mDNS queries with very long DNS names. This issue only affects systems using Buffer Allocation Scheme 1 with LLMNR or mDNS enabled.\n\n\nUsers should upgrade to the latest version and ensure any forked or derivative code is patched to incorporate the new fixes.","published_at":"2025-06-04T17:09:54.718000Z","last_modified_at":null,"cvss_v3_score":null,"cvss_v3_vector":null,"cvss_v3_severity":null,"cvss_v4_score":7.5,"cvss_v4_vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","cvss_v4_severity":"HIGH","ssvc_decision":null,"ssvc_exploitation":null,"ssvc_automatable":null,"ssvc_technical_impact":null,"cwes":["CWE-787"],"nvd_references":["https://aws.amazon.com/security/security-bulletins/AWS-2025-012/","https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/releases/tag/V4.3.2","https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/security/advisories/GHSA-5x4f-fvv8-wr65"],"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":"2026-06-28T23:27:41.749117Z"},"effective_severity":"HIGH","badges":[],"impact_analysis":[],"cvss_v3_decoded":{"version":null,"metrics":[]},"cvss_v4_decoded":{"version":"4.0","metrics":[{"metric":"AV","name":"Attack Vector","value":"L","value_label":"Local"},{"metric":"AC","name":"Attack Complexity","value":"L","value_label":"Low"},{"metric":"AT","name":"Attack Requirements","value":"P","value_label":"Present"},{"metric":"PR","name":"Privileges Required","value":"N","value_label":"None"},{"metric":"UI","name":"User Interaction","value":"N","value_label":"None"},{"metric":"VC","name":"Confidentiality (Vulnerable System)","value":"H","value_label":"High"},{"metric":"VI","name":"Integrity (Vulnerable System)","value":"H","value_label":"High"},{"metric":"VA","name":"Availability (Vulnerable System)","value":"H","value_label":"High"},{"metric":"SC","name":"Confidentiality (Subsequent System)","value":"N","value_label":"None"},{"metric":"SI","name":"Integrity (Subsequent System)","value":"N","value_label":"None"},{"metric":"SA","name":"Availability (Subsequent System)","value":"N","value_label":"None"}]},"affected":[{"vendor_slug":"amazon","vendor_name":"Amazon","product_slug":"freertos","product_name":"FreeRTOS","version_start":"2.3.4","version_start_inclusive":true,"version_end":"4.3.2","version_end_inclusive":false,"cpe23_uri":"cve5:amazon:freertos:2.3.4:4.3.2"}],"exploit_refs":[],"news":[],"references":[{"url":"https://aws.amazon.com/security/security-bulletins/AWS-2025-012/","source_type":"MISC","tags":[]},{"url":"https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/releases/tag/V4.3.2","source_type":"PATCH","tags":["patch"]},{"url":"https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/security/advisories/GHSA-5x4f-fvv8-wr65","source_type":"VENDOR_ADVISORY","tags":["advisory"]}],"timeline":[{"type":"published","at":"2025-06-04T17:09:54.718000Z","label":"CVE published","source":null},{"type":"cvss_changed","at":"2026-06-28T17:48:34.338798Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:48:34.338798Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:48:34.338798Z","label":"CVSS score revised","source":"cvelistv5"}]}