WID-SEC-W-2026-0942
Vulnerability from csaf_certbund - Published: 2026-03-31 22:00 - Updated: 2026-06-02 22:00Summary
xz: Schwachstelle ermöglicht Codeausführung
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: XZ Utils bietet eine universelle Datenkompressionsbibliothek sowie Befehlszeilenwerkzeuge.
Angriff: Ein entfernter, anonymer Angreifer kann eine Schwachstelle in xz ausnutzen, um beliebigen Programmcode auszuführen.
Betroffene Betriebssysteme: - Linux
- Sonstiges
- UNIX
Affected products
Known affected
6 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
|
Ubuntu Linux
Ubuntu
|
cpe:/o:canonical:ubuntu_linux:-
|
— | |
|
SUSE openSUSE
SUSE
|
cpe:/o:suse:opensuse:-
|
— | |
|
Microsoft Azure Linux azl3
Microsoft / Azure Linux
|
cpe:/o:microsoft:azure_linux:azl3
|
azl3 | |
|
Google Container-Optimized OS
Google
|
cpe:/o:google:container-optimized_os:-
|
— | |
|
SUSE Linux
SUSE
|
cpe:/o:suse:suse_linux:-
|
— | |
|
Open Source xz <5.8.3
Open Source / xz
|
<5.8.3 |
References
17 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": "XZ Utils bietet eine universelle Datenkompressionsbibliothek sowie Befehlszeilenwerkzeuge.",
"title": "Produktbeschreibung"
},
{
"category": "summary",
"text": "Ein entfernter, anonymer Angreifer kann eine Schwachstelle in xz ausnutzen, um beliebigen Programmcode auszuf\u00fchren.",
"title": "Angriff"
},
{
"category": "general",
"text": "- Linux\n- Sonstiges\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-2026-0942 - CSAF Version",
"url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-0942.json"
},
{
"category": "self",
"summary": "WID-SEC-2026-0942 - Portal Version",
"url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-0942"
},
{
"category": "external",
"summary": "OSS Security Mailing List vom 2026-03-31",
"url": "https://seclists.org/oss-sec/2026/q1/428"
},
{
"category": "external",
"summary": "Microsoft Leitfaden f\u00fcr Sicherheitsupdates vom 2026-04-05",
"url": "https://msrc.microsoft.com/update-guide/"
},
{
"category": "external",
"summary": "Microsoft Security Update Guide vom 2026-04-14",
"url": "https://msrc.microsoft.com/update-guide/"
},
{
"category": "external",
"summary": "Container-Optimized OS release notes vom 2026-05-02",
"url": "https://docs.cloud.google.com/container-optimized-os/docs/release-notes#May_01_2026"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2026:2051-1 vom 2026-05-25",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2026-May/026274.html"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2026:2052-1 vom 2026-05-25",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2026-May/026273.html"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2026:21729-1 vom 2026-05-22",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2026-May/026242.html"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2026:21740-1 vom 2026-05-22",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2026-May/026260.html"
},
{
"category": "external",
"summary": "Container-Optimized OS release notes vom 2026-05-26",
"url": "https://docs.cloud.google.com/container-optimized-os/docs/release-notes#May_21_2026"
},
{
"category": "external",
"summary": "Container-Optimized OS release notes vom 2026-05-26",
"url": "https://docs.cloud.google.com/container-optimized-os/docs/release-notes#May_01_2026"
},
{
"category": "external",
"summary": "openSUSE Security Update OPENSUSE-SU-2026:20813-1 vom 2026-05-28",
"url": "https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/NDKTB6ILN64Q37PXOWXOD2HG3TRTPGDY/"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2026:21835-1 vom 2026-05-29",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2026-May/026387.html"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2026:2118-1 vom 2026-05-29",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2026-May/026391.html"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2026:21848-1 vom 2026-06-01",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2026-June/026434.html"
},
{
"category": "external",
"summary": "Ubuntu Security Notice USN-8362-1 vom 2026-06-02",
"url": "https://ubuntu.com/security/notices/USN-8362-1"
}
],
"source_lang": "en-US",
"title": "xz: Schwachstelle erm\u00f6glicht Codeausf\u00fchrung",
"tracking": {
"current_release_date": "2026-06-02T22:00:00.000+00:00",
"generator": {
"date": "2026-06-03T06:33:06.677+00:00",
"engine": {
"name": "BSI-WID",
"version": "1.6.0"
}
},
"id": "WID-SEC-W-2026-0942",
"initial_release_date": "2026-03-31T22:00:00.000+00:00",
"revision_history": [
{
"date": "2026-03-31T22:00:00.000+00:00",
"number": "1",
"summary": "Initiale Fassung"
},
{
"date": "2026-04-06T22:00:00.000+00:00",
"number": "2",
"summary": "Neue Updates von European Union Vulnerability Database aufgenommen"
},
{
"date": "2026-04-14T22:00:00.000+00:00",
"number": "3",
"summary": "Neue Updates aufgenommen"
},
{
"date": "2026-05-03T22:00:00.000+00:00",
"number": "4",
"summary": "Neue Updates aufgenommen"
},
{
"date": "2026-05-25T22:00:00.000+00:00",
"number": "5",
"summary": "Neue Updates von SUSE aufgenommen"
},
{
"date": "2026-05-26T22:00:00.000+00:00",
"number": "6",
"summary": "Neue Updates aufgenommen"
},
{
"date": "2026-05-28T22:00:00.000+00:00",
"number": "7",
"summary": "Neue Updates von openSUSE aufgenommen"
},
{
"date": "2026-05-31T22:00:00.000+00:00",
"number": "8",
"summary": "Neue Updates von SUSE aufgenommen"
},
{
"date": "2026-06-01T22:00:00.000+00:00",
"number": "9",
"summary": "Neue Updates von SUSE aufgenommen"
},
{
"date": "2026-06-02T22:00:00.000+00:00",
"number": "10",
"summary": "Neue Updates von Ubuntu aufgenommen"
}
],
"status": "final",
"version": "10"
}
},
"product_tree": {
"branches": [
{
"branches": [
{
"category": "product_name",
"name": "Google Container-Optimized OS",
"product": {
"name": "Google Container-Optimized OS",
"product_id": "1607324",
"product_identification_helper": {
"cpe": "cpe:/o:google:container-optimized_os:-"
}
}
}
],
"category": "vendor",
"name": "Google"
},
{
"branches": [
{
"branches": [
{
"category": "product_version",
"name": "azl3",
"product": {
"name": "Microsoft Azure Linux azl3",
"product_id": "T049210",
"product_identification_helper": {
"cpe": "cpe:/o:microsoft:azure_linux:azl3"
}
}
}
],
"category": "product_name",
"name": "Azure Linux"
}
],
"category": "vendor",
"name": "Microsoft"
},
{
"branches": [
{
"branches": [
{
"category": "product_version_range",
"name": "\u003c5.8.3",
"product": {
"name": "Open Source xz \u003c5.8.3",
"product_id": "T052334"
}
},
{
"category": "product_version",
"name": "5.8.3",
"product": {
"name": "Open Source xz 5.8.3",
"product_id": "T052334-fixed",
"product_identification_helper": {
"cpe": "cpe:/a:tukaani:xz:5.8.3"
}
}
}
],
"category": "product_name",
"name": "xz"
}
],
"category": "vendor",
"name": "Open Source"
},
{
"branches": [
{
"category": "product_name",
"name": "SUSE Linux",
"product": {
"name": "SUSE Linux",
"product_id": "T054643",
"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-2026-34743",
"product_status": {
"known_affected": [
"T000126",
"T027843",
"T049210",
"1607324",
"T054643",
"T052334"
]
},
"release_date": "2026-03-31T22:00:00.000+00:00",
"title": "CVE-2026-34743"
}
]
}
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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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