Tftp: tftp-hpa: denial of service due to out-of-bounds read/write in remap engine
Historical advisory recorded 11 Nov 2026 13:57:25 UTC. Read the latest advisory.
cve-program · CVE-2026-85234
PublishedA 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.
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cve-program · CVE-2026-85234
PublishedTftp: tftp-hpa: denial of service due to out-of-bounds read/write in remap engine
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.
- Source published
- 15 Sep 2026 17:58:51 UTC
- Source modified
- 11 Nov 2026 12:59:13 UTC
- Saved here
- 11 Nov 2026 13:57:25 UTC
- Source terms
- CVE Program Terms of Use
Original source record · Cite this exact observation · Complete original publisher JSON
Source: cve-program · CVE Program Terms of Use. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.
CVSS 3.1 · 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H