{"id":"CVE-2026-85234","title":"A flaw was found in tftp-hpa","summary":"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 ou…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-125"],"vendor":"Red Hat","product":"tftp","affected":["tftp (all versions)","tftp","tftp (all versions)","tftp (all versions)","tftp (all versions)","erlang27"],"published":"2026-09-15","updated":"2026-09-16","sourceUpdated":"2026-09-16T19:42:43.623","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-85234","references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-85234","label":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2460997","label":"secalert@redhat.com"},{"url":"https://git.kernel.org/pub/scm/network/tftp/tftp-hpa.git/commit/?id=4b493532f5ce052a1c124acd0661233ec7918327","label":"secalert@redhat.com"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-85234.json"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-85234"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-85234"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2026-09-15T19:07:11.649679Z"},"ingestedAt":"2026-09-15T18:41:59.147Z","epss":0.0044,"epssPercentile":0.37531,"slug":"CVE-2026-85234","body":"## Overview\n\nA 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9 · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, … · updated 2026-09-15 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-85234.json)","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}