WID-SEC-W-2026-1468
Vulnerability from csaf_certbund - Published: 2026-05-11 22:00 - Updated: 2026-05-27 22:00Summary
dnsmasq: Mehrere Schwachstellen
Severity
Hoch
Notes
Das BSI ist als Anbieter für die eigenen, zur Nutzung bereitgestellten Inhalte nach den allgemeinen Gesetzen verantwortlich. Nutzerinnen und Nutzer sind jedoch dafür verantwortlich, die Verwendung und/oder die Umsetzung der mit den Inhalten bereitgestellten Informationen sorgfältig im Einzelfall zu prüfen.
Produktbeschreibung: Dnsmasq ist ein leichtgewichtiger DNS- und DHCP Server.
Angriff: Ein Angreifer kann mehrere Schwachstellen in dnsmasq ausnutzen, um einen Denial-of-Service-Zustand zu verursachen, beliebigen Code mit Root-Rechten auszuführen, vertrauliche Informationen offenzulegen, Daten zu manipulieren und Benutzer auf bösartige Domains umzuleiten
Betroffene Betriebssysteme: - Linux
- UNIX
Affected products
Known affected
9 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
|
Open Source dnsmasq <2.92rel2
Open Source / dnsmasq
|
<2.92rel2 | ||
|
Debian Linux
Debian
|
cpe:/o:debian:debian_linux:-
|
— | |
|
SUSE Linux
SUSE
|
cpe:/o:suse:suse_linux:-
|
— | |
|
Red Hat Enterprise Linux
Red Hat
|
cpe:/o:redhat:enterprise_linux:-
|
— | |
|
Ubuntu Linux
Ubuntu
|
cpe:/o:canonical:ubuntu_linux:-
|
— | |
|
SUSE openSUSE
SUSE
|
cpe:/o:suse:opensuse:-
|
— | |
|
Amazon Linux 2
Amazon
|
cpe:/o:amazon:linux_2:-
|
— | |
|
Oracle Linux
Oracle
|
cpe:/o:oracle:linux:-
|
— | |
|
Fedora Linux
Fedora
|
cpe:/o:fedoraproject:fedora:-
|
— |
Affected products
Known affected
9 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
|
Open Source dnsmasq <2.92rel2
Open Source / dnsmasq
|
<2.92rel2 | ||
|
Debian Linux
Debian
|
cpe:/o:debian:debian_linux:-
|
— | |
|
SUSE Linux
SUSE
|
cpe:/o:suse:suse_linux:-
|
— | |
|
Red Hat Enterprise Linux
Red Hat
|
cpe:/o:redhat:enterprise_linux:-
|
— | |
|
Ubuntu Linux
Ubuntu
|
cpe:/o:canonical:ubuntu_linux:-
|
— | |
|
SUSE openSUSE
SUSE
|
cpe:/o:suse:opensuse:-
|
— | |
|
Amazon Linux 2
Amazon
|
cpe:/o:amazon:linux_2:-
|
— | |
|
Oracle Linux
Oracle
|
cpe:/o:oracle:linux:-
|
— | |
|
Fedora Linux
Fedora
|
cpe:/o:fedoraproject:fedora:-
|
— |
Affected products
Known affected
9 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
|
Open Source dnsmasq <2.92rel2
Open Source / dnsmasq
|
<2.92rel2 | ||
|
Debian Linux
Debian
|
cpe:/o:debian:debian_linux:-
|
— | |
|
SUSE Linux
SUSE
|
cpe:/o:suse:suse_linux:-
|
— | |
|
Red Hat Enterprise Linux
Red Hat
|
cpe:/o:redhat:enterprise_linux:-
|
— | |
|
Ubuntu Linux
Ubuntu
|
cpe:/o:canonical:ubuntu_linux:-
|
— | |
|
SUSE openSUSE
SUSE
|
cpe:/o:suse:opensuse:-
|
— | |
|
Amazon Linux 2
Amazon
|
cpe:/o:amazon:linux_2:-
|
— | |
|
Oracle Linux
Oracle
|
cpe:/o:oracle:linux:-
|
— | |
|
Fedora Linux
Fedora
|
cpe:/o:fedoraproject:fedora:-
|
— |
Affected products
Known affected
9 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
|
Open Source dnsmasq <2.92rel2
Open Source / dnsmasq
|
<2.92rel2 | ||
|
Debian Linux
Debian
|
cpe:/o:debian:debian_linux:-
|
— | |
|
SUSE Linux
SUSE
|
cpe:/o:suse:suse_linux:-
|
— | |
|
Red Hat Enterprise Linux
Red Hat
|
cpe:/o:redhat:enterprise_linux:-
|
— | |
|
Ubuntu Linux
Ubuntu
|
cpe:/o:canonical:ubuntu_linux:-
|
— | |
|
SUSE openSUSE
SUSE
|
cpe:/o:suse:opensuse:-
|
— | |
|
Amazon Linux 2
Amazon
|
cpe:/o:amazon:linux_2:-
|
— | |
|
Oracle Linux
Oracle
|
cpe:/o:oracle:linux:-
|
— | |
|
Fedora Linux
Fedora
|
cpe:/o:fedoraproject:fedora:-
|
— |
Affected products
Known affected
9 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
|
Open Source dnsmasq <2.92rel2
Open Source / dnsmasq
|
<2.92rel2 | ||
|
Debian Linux
Debian
|
cpe:/o:debian:debian_linux:-
|
— | |
|
SUSE Linux
SUSE
|
cpe:/o:suse:suse_linux:-
|
— | |
|
Red Hat Enterprise Linux
Red Hat
|
cpe:/o:redhat:enterprise_linux:-
|
— | |
|
Ubuntu Linux
Ubuntu
|
cpe:/o:canonical:ubuntu_linux:-
|
— | |
|
SUSE openSUSE
SUSE
|
cpe:/o:suse:opensuse:-
|
— | |
|
Amazon Linux 2
Amazon
|
cpe:/o:amazon:linux_2:-
|
— | |
|
Oracle Linux
Oracle
|
cpe:/o:oracle:linux:-
|
— | |
|
Fedora Linux
Fedora
|
cpe:/o:fedoraproject:fedora:-
|
— |
Affected products
Known affected
9 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
|
Open Source dnsmasq <2.92rel2
Open Source / dnsmasq
|
<2.92rel2 | ||
|
Debian Linux
Debian
|
cpe:/o:debian:debian_linux:-
|
— | |
|
SUSE Linux
SUSE
|
cpe:/o:suse:suse_linux:-
|
— | |
|
Red Hat Enterprise Linux
Red Hat
|
cpe:/o:redhat:enterprise_linux:-
|
— | |
|
Ubuntu Linux
Ubuntu
|
cpe:/o:canonical:ubuntu_linux:-
|
— | |
|
SUSE openSUSE
SUSE
|
cpe:/o:suse:opensuse:-
|
— | |
|
Amazon Linux 2
Amazon
|
cpe:/o:amazon:linux_2:-
|
— | |
|
Oracle Linux
Oracle
|
cpe:/o:oracle:linux:-
|
— | |
|
Fedora Linux
Fedora
|
cpe:/o:fedoraproject:fedora:-
|
— |
References
26 references
{
"document": {
"aggregate_severity": {
"text": "hoch"
},
"category": "csaf_base",
"csaf_version": "2.0",
"distribution": {
"tlp": {
"label": "WHITE",
"url": "https://www.first.org/tlp/"
}
},
"lang": "de-DE",
"notes": [
{
"category": "legal_disclaimer",
"text": "Das BSI ist als Anbieter f\u00fcr die eigenen, zur Nutzung bereitgestellten Inhalte nach den allgemeinen Gesetzen verantwortlich. Nutzerinnen und Nutzer sind jedoch daf\u00fcr verantwortlich, die Verwendung und/oder die Umsetzung der mit den Inhalten bereitgestellten Informationen sorgf\u00e4ltig im Einzelfall zu pr\u00fcfen."
},
{
"category": "description",
"text": "Dnsmasq ist ein leichtgewichtiger DNS- und DHCP Server.",
"title": "Produktbeschreibung"
},
{
"category": "summary",
"text": "Ein Angreifer kann mehrere Schwachstellen in dnsmasq ausnutzen, um einen Denial-of-Service-Zustand zu verursachen, beliebigen Code mit Root-Rechten auszuf\u00fchren, vertrauliche Informationen offenzulegen, Daten zu manipulieren und Benutzer auf b\u00f6sartige Domains umzuleiten",
"title": "Angriff"
},
{
"category": "general",
"text": "- Linux\n- UNIX",
"title": "Betroffene Betriebssysteme"
}
],
"publisher": {
"category": "other",
"contact_details": "csaf-provider@cert-bund.de",
"name": "Bundesamt f\u00fcr Sicherheit in der Informationstechnik",
"namespace": "https://www.bsi.bund.de"
},
"references": [
{
"category": "self",
"summary": "WID-SEC-W-2026-1468 - CSAF Version",
"url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-1468.json"
},
{
"category": "self",
"summary": "WID-SEC-2026-1468 - Portal Version",
"url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-1468"
},
{
"category": "external",
"summary": "CERT Coordination Center vom 2026-05-11",
"url": "https://www.kb.cert.org/vuls/id/471747"
},
{
"category": "external",
"summary": "dnsmasq Changelog vom 2026-05-11",
"url": "https://thekelleys.org.uk/dnsmasq/CHANGELOG"
},
{
"category": "external",
"summary": "Debian Security Advisory DSA-6264 vom 2026-05-11",
"url": "https://lists.debian.org/debian-security-announce/2026/msg00175.html"
},
{
"category": "external",
"summary": "Fedora Security Advisory FEDORA-2026-AC5CCEEC13 vom 2026-05-12",
"url": "https://bodhi.fedoraproject.org/updates/FEDORA-2026-ac5cceec13"
},
{
"category": "external",
"summary": "Fedora Security Advisory FEDORA-2026-6384A3CF14 vom 2026-05-12",
"url": "https://bodhi.fedoraproject.org/updates/FEDORA-2026-6384a3cf14"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2026:1827-1 vom 2026-05-13",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2026-May/026015.html"
},
{
"category": "external",
"summary": "Ubuntu Security Notice USN-8268-1 vom 2026-05-13",
"url": "https://ubuntu.com/security/notices/USN-8268-1"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2026:1826-1 vom 2026-05-13",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2026-May/026016.html"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2026:1828-1 vom 2026-05-13",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2026-May/026014.html"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2026:21640-1 vom 2026-05-15",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2026-May/026052.html"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2026:21626-1 vom 2026-05-15",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2026-May/026066.html"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2026:21633-1 vom 2026-05-15",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2026-May/026059.html"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2026:1934-1 vom 2026-05-18",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2026-May/026121.html"
},
{
"category": "external",
"summary": "openSUSE Security Update OPENSUSE-SU-2026:20748-1 vom 2026-05-19",
"url": "https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/RQFO6J45PPUW5LJFB2HSLIVIAQLUV75Z/"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2026:21677-1 vom 2026-05-19",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2026-May/026158.html"
},
{
"category": "external",
"summary": "Red Hat Security Advisory RHSA-2026:19373 vom 2026-05-20",
"url": "https://access.redhat.com/errata/RHSA-2026:19373"
},
{
"category": "external",
"summary": "Red Hat Security Advisory RHSA-2026:19158 vom 2026-05-19",
"url": "https://access.redhat.com/errata/RHSA-2026:19158"
},
{
"category": "external",
"summary": "openSUSE Security Update OPENSUSE-SU-2026:10821-1 vom 2026-05-21",
"url": "https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/ZVZVK3B6N4KRDHO7EXWKA5KSCH5VKF5K/"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2026:21733-1 vom 2026-05-22",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2026-May/026266.html"
},
{
"category": "external",
"summary": "Red Hat Security Advisory RHSA-2026:20589 vom 2026-05-26",
"url": "https://access.redhat.com/errata/RHSA-2026:20589"
},
{
"category": "external",
"summary": "Oracle Linux Security Advisory ELSA-2026-20589 vom 2026-05-26",
"url": "https://linux.oracle.com/errata/ELSA-2026-20589.html"
},
{
"category": "external",
"summary": "Amazon Linux Security Advisory ALAS2-2026-3318 vom 2026-05-26",
"url": "https://alas.aws.amazon.com/AL2/ALAS2-2026-3318.html"
},
{
"category": "external",
"summary": "Amazon Linux Security Advisory ALAS2DNSMASQ-2026-004 vom 2026-05-26",
"url": "https://alas.aws.amazon.com/AL2/ALAS2DNSMASQ-2026-004.html"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2026:21788-1 vom 2026-05-27",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2026-May/026352.html"
}
],
"source_lang": "en-US",
"title": "dnsmasq: Mehrere Schwachstellen",
"tracking": {
"current_release_date": "2026-05-27T22:00:00.000+00:00",
"generator": {
"date": "2026-05-28T07:28:35.105+00:00",
"engine": {
"name": "BSI-WID",
"version": "1.6.0"
}
},
"id": "WID-SEC-W-2026-1468",
"initial_release_date": "2026-05-11T22:00:00.000+00:00",
"revision_history": [
{
"date": "2026-05-11T22:00:00.000+00:00",
"number": "1",
"summary": "Initiale Fassung"
},
{
"date": "2026-05-12T22:00:00.000+00:00",
"number": "2",
"summary": "Neue Updates von Fedora aufgenommen"
},
{
"date": "2026-05-14T22:00:00.000+00:00",
"number": "3",
"summary": "Neue Updates von SUSE und Ubuntu aufgenommen"
},
{
"date": "2026-05-17T22:00:00.000+00:00",
"number": "4",
"summary": "Neue Updates von SUSE aufgenommen"
},
{
"date": "2026-05-18T22:00:00.000+00:00",
"number": "5",
"summary": "Neue Updates von SUSE aufgenommen"
},
{
"date": "2026-05-19T22:00:00.000+00:00",
"number": "6",
"summary": "Neue Updates von SUSE und Red Hat aufgenommen"
},
{
"date": "2026-05-21T22:00:00.000+00:00",
"number": "7",
"summary": "Neue Updates von openSUSE aufgenommen"
},
{
"date": "2026-05-25T22:00:00.000+00:00",
"number": "8",
"summary": "Neue Updates von SUSE und Red Hat aufgenommen"
},
{
"date": "2026-05-26T22:00:00.000+00:00",
"number": "9",
"summary": "Neue Updates von Oracle Linux und Amazon aufgenommen"
},
{
"date": "2026-05-27T22:00:00.000+00:00",
"number": "10",
"summary": "Neue Updates von SUSE aufgenommen"
}
],
"status": "final",
"version": "10"
}
},
"product_tree": {
"branches": [
{
"branches": [
{
"category": "product_name",
"name": "Amazon Linux 2",
"product": {
"name": "Amazon Linux 2",
"product_id": "398363",
"product_identification_helper": {
"cpe": "cpe:/o:amazon:linux_2:-"
}
}
}
],
"category": "vendor",
"name": "Amazon"
},
{
"branches": [
{
"category": "product_name",
"name": "Debian Linux",
"product": {
"name": "Debian Linux",
"product_id": "2951",
"product_identification_helper": {
"cpe": "cpe:/o:debian:debian_linux:-"
}
}
}
],
"category": "vendor",
"name": "Debian"
},
{
"branches": [
{
"category": "product_name",
"name": "Fedora Linux",
"product": {
"name": "Fedora Linux",
"product_id": "74185",
"product_identification_helper": {
"cpe": "cpe:/o:fedoraproject:fedora:-"
}
}
}
],
"category": "vendor",
"name": "Fedora"
},
{
"branches": [
{
"branches": [
{
"category": "product_version_range",
"name": "\u003c2.92rel2",
"product": {
"name": "Open Source dnsmasq \u003c2.92rel2",
"product_id": "T053807"
}
},
{
"category": "product_version",
"name": "2.92rel2",
"product": {
"name": "Open Source dnsmasq 2.92rel2",
"product_id": "T053807-fixed",
"product_identification_helper": {
"cpe": "cpe:/a:dnsmasq:dnsmasq:2.92rel2"
}
}
}
],
"category": "product_name",
"name": "dnsmasq"
}
],
"category": "vendor",
"name": "Open Source"
},
{
"branches": [
{
"category": "product_name",
"name": "Oracle Linux",
"product": {
"name": "Oracle Linux",
"product_id": "T004914",
"product_identification_helper": {
"cpe": "cpe:/o:oracle:linux:-"
}
}
}
],
"category": "vendor",
"name": "Oracle"
},
{
"branches": [
{
"category": "product_name",
"name": "Red Hat Enterprise Linux",
"product": {
"name": "Red Hat Enterprise Linux",
"product_id": "67646",
"product_identification_helper": {
"cpe": "cpe:/o:redhat:enterprise_linux:-"
}
}
}
],
"category": "vendor",
"name": "Red Hat"
},
{
"branches": [
{
"category": "product_name",
"name": "SUSE Linux",
"product": {
"name": "SUSE Linux",
"product_id": "T002207",
"product_identification_helper": {
"cpe": "cpe:/o:suse:suse_linux:-"
}
}
},
{
"category": "product_name",
"name": "SUSE openSUSE",
"product": {
"name": "SUSE openSUSE",
"product_id": "T027843",
"product_identification_helper": {
"cpe": "cpe:/o:suse:opensuse:-"
}
}
}
],
"category": "vendor",
"name": "SUSE"
},
{
"branches": [
{
"category": "product_name",
"name": "Ubuntu Linux",
"product": {
"name": "Ubuntu Linux",
"product_id": "T000126",
"product_identification_helper": {
"cpe": "cpe:/o:canonical:ubuntu_linux:-"
}
}
}
],
"category": "vendor",
"name": "Ubuntu"
}
]
},
"vulnerabilities": [
{
"cve": "CVE-2026-2291",
"product_status": {
"known_affected": [
"T053807",
"2951",
"T002207",
"67646",
"T000126",
"T027843",
"398363",
"T004914",
"74185"
]
},
"release_date": "2026-05-11T22:00:00.000+00:00",
"title": "CVE-2026-2291"
},
{
"cve": "CVE-2026-4892",
"product_status": {
"known_affected": [
"T053807",
"2951",
"T002207",
"67646",
"T000126",
"T027843",
"398363",
"T004914",
"74185"
]
},
"release_date": "2026-05-11T22:00:00.000+00:00",
"title": "CVE-2026-4892"
},
{
"cve": "CVE-2026-4893",
"product_status": {
"known_affected": [
"T053807",
"2951",
"T002207",
"67646",
"T000126",
"T027843",
"398363",
"T004914",
"74185"
]
},
"release_date": "2026-05-11T22:00:00.000+00:00",
"title": "CVE-2026-4893"
},
{
"cve": "CVE-2026-5172",
"product_status": {
"known_affected": [
"T053807",
"2951",
"T002207",
"67646",
"T000126",
"T027843",
"398363",
"T004914",
"74185"
]
},
"release_date": "2026-05-11T22:00:00.000+00:00",
"title": "CVE-2026-5172"
},
{
"cve": "CVE-2026-4891",
"product_status": {
"known_affected": [
"T053807",
"2951",
"T002207",
"67646",
"T000126",
"T027843",
"398363",
"T004914",
"74185"
]
},
"release_date": "2026-05-11T22:00:00.000+00:00",
"title": "CVE-2026-4891"
},
{
"cve": "CVE-2026-4890",
"product_status": {
"known_affected": [
"T053807",
"2951",
"T002207",
"67646",
"T000126",
"T027843",
"398363",
"T004914",
"74185"
]
},
"release_date": "2026-05-11T22:00:00.000+00:00",
"title": "CVE-2026-4890"
}
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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