{"document":{"category":"csaf_vex","csaf_version":"2.0","title":"CVE-2026-30803: Integer Underflow (Wrap or Wraparound) vulnerability in RTI Connext Micro (Core Libraries) allows Overread Buffers.","publisher":{"category":"vendor","name":"HarborGuard Database","namespace":"https://database.harborguard.co"},"tracking":{"id":"CVE-2026-30803","status":"final","version":"1","initial_release_date":"2026-06-17T17:21:11.644Z","current_release_date":"2026-06-17T17:58:17.787Z","revision_history":[{"date":"2026-06-17T17:21:11.644Z","number":"1","summary":"Initial machine-readable export from HarborGuard."}]},"distribution":{"tlp":{"label":"WHITE"},"text":"Public CVE data; freely redistributable."},"notes":[{"category":"description","text":"Integer Underflow (Wrap or Wraparound) vulnerability in RTI Connext Micro (Core Libraries) allows Overread Buffers.This issue affects Connext Micro: from 4.0.0 before 4.3.0.","title":"CVE description"}],"references":[{"category":"self","summary":"CVE-2026-30803 on HarborGuard Database","url":"https://database.harborguard.co/cve/CVE-2026-30803"},{"category":"external","summary":"CVE Record","url":"https://www.cve.org/CVERecord?id=CVE-2026-30803"},{"category":"external","summary":"rti.com","url":"https://www.rti.com/vulnerabilities/#cve-2026-30803"}]},"product_tree":{"branches":[{"category":"vendor","name":"RTI","branches":[{"category":"product_name","name":"Connext Micro","branches":[{"category":"product_version_range","name":">=4.0.0 <4.3.0","product":{"name":"RTI Connext Micro >=4.0.0 <4.3.0","product_id":"CSAFPID-1","product_identification_helper":{"cpe":"cpe:2.3:a:rti:connext_micro:*:*:*:*:*:*:*:*"}}}]}]}]},"vulnerabilities":[{"cve":"CVE-2026-30803","title":"Integer Underflow (Wrap or Wraparound) vulnerability in RTI Connext Micro (Core Libraries) allows Overread Buffers.","notes":[{"category":"description","text":"Integer Underflow (Wrap or Wraparound) vulnerability in RTI Connext Micro (Core Libraries) allows Overread Buffers.This issue affects Connext Micro: from 4.0.0 before 4.3.0.","title":"CVE description"}],"product_status":{"known_affected":["CSAFPID-1"]},"scores":[{"cvss_v4":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N","baseScore":8.8,"baseSeverity":"HIGH"},"products":["CSAFPID-1"]}],"remediations":[{"category":"vendor_fix","details":"Update to a fixed version: 4.3.0.","product_ids":["CSAFPID-1"]}]}]}