DEBIAN-CVE-2026-67858
Buffer Overflow vulnerability exists in open62541 1.5.5 when the Local Discovery Server (LDS) is built with multicast discovery enabled through the MDNSD backend. An unauthenticated remote attacker can send a RegisterServer or RegisterServer2 request containing many unique discoveryUrls. This allows remote attackers to cause a denial of service.
DEBIAN-CVE-2026-67858
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-2026-67858
open62541
Source reference: /affected/0/package/name
- Affected versions
- 1.4.11.1-1
Source reference:
/affected/0/versions1.4.18-1Source reference:
/affected/0/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
open62541
Source reference: /affected/1/package/name
- Affected versions
- 1.4.11.1-1
Source reference:
/affected/1/versions1.4.18-1Source reference:
/affected/1/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": "open62541",
"purl": "pkg:deb/debian/open62541?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"1.4.11.1-1",
"1.4.18-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-67858.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "open62541",
"purl": "pkg:deb/debian/open62541?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"1.4.11.1-1",
"1.4.18-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-67858.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #58299 · Revision 1
- Added to Heist Feed
- Publisher date