CVE-2026-85234
highA flaw was found in tftp-hpa.
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.
CVSS
7.5
7.5 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Severity source: NVD CVSS v3.1 (secalert@redhat.com)
Timeline (UTC)
Published: 2026-09-15 18:19
Modified: 2026-10-13 16:17
NVD status: Awaiting Analysis
Last synced 1 day ago
Verified against the source API 2026-10-27 06:53 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://access.redhat.com/errata/RHSA-2026:78952 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2026:80663 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2026:82280 secalert@redhat.com
- https://access.redhat.com/security/cve/CVE-2026-85234 secalert@redhat.com
- https://bugzilla.redhat.com/show_bug.cgi?id=2460997 secalert@redhat.com
- https://git.kernel.org/pub/scm/network/tftp/tftp-hpa.git/commit/?id=4b493532f5ce052a1c124a... secalert@redhat.com
Data sources
NVD CVE API 2.0 — fetched 2026-10-27 06:53 UTC · record ↗