{"id":"DEBIAN-CVE-2026-71218","details":"A flaw was found in iperf3. A remote unauthenticated attacker can exploit a vulnerability in the `JSON_read()` function, which accepts a peer-controlled message length and allocates memory without an upper bound. This allows the attacker to trigger excessive memory consumption, leading to a Denial of Service (DoS) through memory exhaustion, severe slowdown, or termination of the iperf3 service.","modified":"2026-09-14T17:03:51.492246535Z","published":"2026-08-11T09:17:14.200Z","upstream":["CVE-2026-71218"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-71218"}],"affected":[{"package":{"name":"iperf3","ecosystem":"Debian:12","purl":"pkg:deb/debian/iperf3?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.12-1","3.12-1+deb12u1","3.12-1+deb12u2","3.13-1","3.13-2","3.14-1","3.15-1","3.16-1","3.17.1-1","3.18-1","3.18-2","3.19.1-1","3.19.1-2","3.20-1","3.20-2","3.20-2.1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-71218.json"}},{"package":{"name":"iperf3","ecosystem":"Debian:13","purl":"pkg:deb/debian/iperf3?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.18-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-71218.json"}},{"package":{"name":"iperf3","ecosystem":"Debian:14","purl":"pkg:deb/debian/iperf3?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.18-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-71218.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"}]}