DEBIAN-CVE-2026-56786
RTKLIB through 2.4.3 contains an out-of-bounds write vulnerability in decode_type1033 function that fails to clamp length counters to destination buffer size, allowing up to 191-byte overflow into fixed 64-byte descriptor fields. An attacker controlling an NTRIP or serial RTCM3 correction stream can craft a valid CRC-bearing type-1033 message to corrupt adjacent rtcm_t object members, potentially achieving arbitrary code execution or denial of service.
DEBIAN-CVE-2026-56786
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:DEBIAN-CVE-2026-56786
rtklib
Source reference: /affected/0/package/name
- Affected versions
- 2.4.3.b34+dfsg-1
Source reference:
/affected/0/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
rtklib
Source reference: /affected/1/package/name
- Affected versions
- 2.4.3.b34+dfsg-1
Source reference:
/affected/1/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
rtklib
Source reference: /affected/2/package/name
- Affected versions
- 2.4.3.b34+dfsg-1
Source reference:
/affected/2/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "rtklib",
"purl": "pkg:deb/debian/rtklib?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"2.4.3.b34+dfsg-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-56786.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "rtklib",
"purl": "pkg:deb/debian/rtklib?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"2.4.3.b34+dfsg-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-56786.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "rtklib",
"purl": "pkg:deb/debian/rtklib?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"2.4.3.b34+dfsg-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-56786.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #57928 · Revision 1
- Added to Heist Feed
- Publisher date