{"id":"DEBIAN-CVE-2026-85234","details":"A flaw was found in tftp-hpa. When the `in.tftpd` remap engine processes an inverse remap rule that also aborts with a non-empty custom error message, it can pass invalid match offsets to the `genmatchstring()` function. This leads to out-of-bounds read/write operations. A remote, unauthenticated attacker can exploit this vulnerability by sending a specially crafted request, causing the daemon to crash and resulting in a denial of service.","modified":"2026-09-17T08:47:32.752675901Z","published":"2026-09-15T18:19:34.927Z","upstream":["CVE-2026-85234"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-85234"}],"affected":[{"package":{"name":"tftp-hpa","ecosystem":"Debian:12","purl":"pkg:deb/debian/tftp-hpa?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.2+20150808-1.4","5.2+20150808-2","5.2+20240610-1","5.2+20240610-2","5.2+20240610-3","5.3+20251110-1","5.3+20251116-1","5.3+20251209-1","5.3+20251209-2","5.4-1","5.4-2"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-85234.json"}},{"package":{"name":"tftp-hpa","ecosystem":"Debian:13","purl":"pkg:deb/debian/tftp-hpa?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.2+20240610-3","5.3+20251110-1","5.3+20251116-1","5.3+20251209-1","5.3+20251209-2","5.4-1","5.4-2"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-85234.json"}},{"package":{"name":"tftp-hpa","ecosystem":"Debian:14","purl":"pkg:deb/debian/tftp-hpa?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.3+20251116-1"}]}],"versions":["5.2+20240610-3","5.3+20251110-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-85234.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:H"}]}