{"cve":{"cve_id":"CVE-2026-70464","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":0.00573,"epss_percentile":0.44858,"epss_as_of":"2026-08-26","description":"rsync daemon 2.0.0 before 3.5.0 contains a denial of service vulnerability that allows unauthenticated remote attackers to exhaust daemon connection slots by stalling the handshake process before or after module selection without triggering the I/O timeout. Attackers can open many simultaneous connections and trickle data at the minimum rate to avoid timeout, or stall entirely before module selection where no timeout applies, consuming all available connection slots and denying service to legitimate clients.","published_at":"2026-08-13T14:41:47.987000Z","last_modified_at":"2026-08-14T16:16:59.633000Z","cvss_v3_score":7.5,"cvss_v3_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cvss_v3_severity":"HIGH","cvss_v4_score":8.7,"cvss_v4_vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","cvss_v4_severity":"HIGH","ssvc_decision":null,"ssvc_exploitation":"none","ssvc_automatable":true,"ssvc_technical_impact":"partial","cwes":["CWE-770"],"nvd_references":["https://github.com/RsyncProject/rsync/security/advisories/GHSA-hrwq-ccf7-rw5m","https://github.com/RsyncProject/rsync/releases/tag/v3.5.0","https://www.vulncheck.com/advisories/rsync-connection-slot-exhaustion-dos-via-handshake-stall"],"vuln_status":"Received","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":"2026-08-13T16:20:52.863670Z","updated_at":"2026-08-15T19:11:26.492639Z"},"effective_severity":"HIGH","badges":[],"impact_analysis":[],"cvss_v3_decoded":{"version":"3.1","metrics":[{"metric":"AV","name":"Attack Vector","value":"N","value_label":"Network"},{"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":"4.0","metrics":[{"metric":"AV","name":"Attack Vector","value":"N","value_label":"Network"},{"metric":"AC","name":"Attack Complexity","value":"L","value_label":"Low"},{"metric":"AT","name":"Attack Requirements","value":"N","value_label":"None"},{"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":"N","value_label":"None"},{"metric":"VI","name":"Integrity (Vulnerable System)","value":"N","value_label":"None"},{"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":"rsyncproject","vendor_name":"RsyncProject","product_slug":"rsync","product_name":"rsync","version_start":"2.0.0","version_start_inclusive":true,"version_end":"3.4.4","version_end_inclusive":true,"cpe23_uri":"cve5:rsyncproject:rsync:2.0.0:3.4.4"},{"vendor_slug":"rsyncproject","vendor_name":"RsyncProject","product_slug":"rsync","product_name":"rsync","version_start":"3.5.0","version_start_inclusive":true,"version_end":"3.5.0","version_end_inclusive":true,"cpe23_uri":"cve5:rsyncproject:rsync:3.5.0:3.5.0"}],"exploit_refs":[],"news":[],"references":[{"url":"https://github.com/RsyncProject/rsync/security/advisories/GHSA-hrwq-ccf7-rw5m","source_type":"VENDOR_ADVISORY","tags":["advisory"]},{"url":"https://github.com/RsyncProject/rsync/releases/tag/v3.5.0","source_type":"PATCH","tags":["patch"]},{"url":"https://www.vulncheck.com/advisories/rsync-connection-slot-exhaustion-dos-via-handshake-stall","source_type":"VENDOR_ADVISORY","tags":["advisory"]}],"timeline":[{"type":"published","at":"2026-08-13T14:41:47.987000Z","label":"CVE published","source":null},{"type":"ssvc_changed","at":"2026-08-14T16:21:52.868909Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"ssvc_changed","at":"2026-08-14T16:21:52.868909Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"ssvc_changed","at":"2026-08-14T16:21:52.868909Z","label":"SSVC decision revised","source":"vulnrichment"}]}