MediumFix available
tftp-hpa — security advisory
tftp-hpa 5.4 before 6.0 contains an out-of-bounds read vulnerability in rewrite_string() in tftpd/remap.c that walks heap memory during jump label searches. Unauthenticated remote attackers can send read or write requests whose filename matches a remap jump rule to crash the forked in.tftpd request handler.
- Products
- tftp-hpa
- Affected 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, 7.1-1, 7.2+20261013-1, 7.2+20261013-2, 7.2-1, 7.2-2, 7.2-3
- Fixed versions
- 7.1-1
- CVEs
- CVE-2026-106026
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 05:16 UTC · Revision 1
Source evidence
tftp-hpa 5.4 before 6.0 contains an out-of-bounds read vulnerability in rewrite_string() in tftpd/remap.c that walks heap memory during jump label searches. Unauthenticated remote attackers can send read or write requests whose filename matches a remap jump rule to crash the forked in.tftpd request handler.
osv:DEBIAN-CVE-2026-106026
tftp-hpa
Fixed versions: Not specified
tftp-hpa
Fixed versions: Not specified
tftp-hpa
Fixed versions: 7.1-1
Complete source record
{
"id": "058ece33df7b81c467109ce67f2ffe1cb81e0f65f120514b4d0e73e02e5b932d",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2026-106026",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2026-106026",
"summary": "tftp-hpa 5.4 before 6.0 contains an out-of-bounds read vulnerability in rewrite_string() in tftpd/remap.c that walks heap memory during jump label searches. Unauthenticated remote attackers can send read or write requests whose filename matches a remap jump rule to crash the forked in.tftpd request handler.",
"evidence": "osv:DEBIAN-CVE-2026-106026",
"products": [
{
"name": {
"value": "tftp-hpa",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "5.2+20150808-1.4",
"evidence": "/affected/0/versions"
},
{
"value": "5.2+20150808-2",
"evidence": "/affected/0/versions"
},
{
"value": "5.2+20240610-1",
"evidence": "/affected/0/versions"
},
{
"value": "5.2+20240610-2",
"evidence": "/affected/0/versions"
},
{
"value": "5.2+20240610-3",
"evidence": "/affected/0/versions"
},
{
"value": "5.3+20251110-1",
"evidence": "/affected/0/versions"
},
{
"value": "5.3+20251116-1",
"evidence": "/affected/0/versions"
},
{
"value": "5.3+20251209-1",
"evidence": "/affected/0/versions"
},
{
"value": "5.3+20251209-2",
"evidence": "/affected/0/versions"
},
{
"value": "5.4-1",
"evidence": "/affected/0/versions"
},
{
"value": "5.4-2",
"evidence": "/affected/0/versions"
},
{
"value": "7.1-1",
"evidence": "/affected/0/versions"
},
{
"value": "7.2+20261013-1",
"evidence": "/affected/0/versions"
},
{
"value": "7.2+20261013-2",
"evidence": "/affected/0/versions"
},
{
"value": "7.2-1",
"evidence": "/affected/0/versions"
},
{
"value": "7.2-2",
"evidence": "/affected/0/versions"
},
{
"value": "7.2-3",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "tftp-hpa",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "5.2+20240610-3",
"evidence": "/affected/1/versions"
},
{
"value": "5.3+20251110-1",
"evidence": "/affected/1/versions"
},
{
"value": "5.3+20251116-1",
"evidence": "/affected/1/versions"
},
{
"value": "5.3+20251209-1",
"evidence": "/affected/1/versions"
},
{
"value": "5.3+20251209-2",
"evidence": "/affected/1/versions"
},
{
"value": "5.4-1",
"evidence": "/affected/1/versions"
},
{
"value": "5.4-2",
"evidence": "/affected/1/versions"
},
{
"value": "7.1-1",
"evidence": "/affected/1/versions"
},
{
"value": "7.2+20261013-1",
"evidence": "/affected/1/versions"
},
{
"value": "7.2+20261013-2",
"evidence": "/affected/1/versions"
},
{
"value": "7.2-1",
"evidence": "/affected/1/versions"
},
{
"value": "7.2-2",
"evidence": "/affected/1/versions"
},
{
"value": "7.2-3",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "tftp-hpa",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "7.1-1",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": [
{
"value": "5.2+20240610-3",
"evidence": "/affected/2/versions"
},
{
"value": "5.3+20251110-1",
"evidence": "/affected/2/versions"
},
{
"value": "5.3+20251116-1",
"evidence": "/affected/2/versions"
},
{
"value": "5.3+20251209-1",
"evidence": "/affected/2/versions"
},
{
"value": "5.3+20251209-2",
"evidence": "/affected/2/versions"
},
{
"value": "5.4-1",
"evidence": "/affected/2/versions"
},
{
"value": "5.4-2",
"evidence": "/affected/2/versions"
}
]
}
],
"severity": "medium",
"structured": {
"id": "DEBIAN-CVE-2026-106026",
"aliases": [
"DEBIAN-CVE-2026-106026"
],
"metrics": [
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "tftp-hpa",
"purl": "pkg:deb/debian/tftp-hpa?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"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",
"7.1-1",
"7.2+20261013-1",
"7.2+20261013-2",
"7.2-1",
"7.2-2",
"7.2-3"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-106026.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "tftp-hpa",
"purl": "pkg:deb/debian/tftp-hpa?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"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",
"7.1-1",
"7.2+20261013-1",
"7.2+20261013-2",
"7.2-1",
"7.2-2",
"7.2-3"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-106026.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "7.1-1"
}
]
}
],
"package": {
"name": "tftp-hpa",
"purl": "pkg:deb/debian/tftp-hpa?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"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"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-106026.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-18T04:00:07.616709022Z",
"provider": "osv",
"upstream": [
"CVE-2026-106026"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2026-106026"
]
},
"related_cves": [
{
"value": "CVE-2026-106026",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 366680,
"published_at": "2026-10-06T14:17:42.083+00:00"
}