WID-SEC-W-2026-1300
Vulnerability from csaf_certbund - Published: 2026-04-28 22:00 - Updated: 2026-08-31 22:00Summary
GNU libc: Mehrere Schwachstellen
Severity
Mittel
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: Die GNU libc ist die Basis C Bibliothek unter Linux sowie anderen Unix-Betriebssystemen, welche die Systemaufrufe sowie Basisfunktionalität bereitstellt.
Angriff: Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in GNU libc ausnutzen, um beliebigen Programmcode auszuführen, einen Denial-of-Service-Zustand zu verursachen oder vertrauliche Informationen offenzulegen.
Betroffene Betriebssysteme: - UNIX
Affected products
Known affected
8 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
|
Oracle Linux
Oracle
|
cpe:/o:oracle:linux:-
|
— | |
|
Dell Secure Connect Gateway <5.36.00.16
Dell / Secure Connect Gateway
|
<5.36.00.16 | ||
|
SUSE Linux
SUSE
|
cpe:/o:suse:suse_linux:-
|
— | |
|
RESF Rocky Linux
RESF
|
cpe:/o:resf:rocky_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:-
|
— | |
|
Fedora Linux
Fedora
|
cpe:/o:fedoraproject:fedora:-
|
— |
Affected products
Known affected
8 products, the same list as for
CVE-2026-5435
References
37 references
{
"document": {
"aggregate_severity": {
"text": "mittel"
},
"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": "Die GNU libc ist die Basis C Bibliothek unter Linux sowie anderen Unix-Betriebssystemen, welche die Systemaufrufe sowie Basisfunktionalit\u00e4t bereitstellt.",
"title": "Produktbeschreibung"
},
{
"category": "summary",
"text": "Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in GNU libc ausnutzen, um beliebigen Programmcode auszuf\u00fchren, einen Denial-of-Service-Zustand zu verursachen oder vertrauliche Informationen offenzulegen.",
"title": "Angriff"
},
{
"category": "general",
"text": "- 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-2026-1300 - CSAF Version",
"url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-1300.json"
},
{
"category": "self",
"summary": "WID-SEC-2026-1300 - Portal Version",
"url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-1300"
},
{
"category": "external",
"summary": "OSS Security Mailing List vom 2026-04-28",
"url": "https://seclists.org/oss-sec/2026/q2/251"
},
{
"category": "external",
"summary": "GitHub Security Advisory GHSA-h8wx-jcwq-g3cp vom 2026-04-28",
"url": "https://github.com/advisories/GHSA-h8wx-jcwq-g3cp"
},
{
"category": "external",
"summary": "Red Hat Bugtracker 2463465 vom 2026-04-28",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2463465"
},
{
"category": "external",
"summary": "PoC CVE-2026-5435vom 2026-04-28",
"url": "https://sourceware.org/bugzilla/show_bug.cgi?id=34033"
},
{
"category": "external",
"summary": "Fedora Security Advisory FEDORA-2026-4B7780802C vom 2026-05-01",
"url": "https://bodhi.fedoraproject.org/updates/FEDORA-2026-4b7780802c"
},
{
"category": "external",
"summary": "Red Hat Security Advisory RHSA-2026:12740 vom 2026-05-01",
"url": "https://access.redhat.com/errata/RHSA-2026:12740"
},
{
"category": "external",
"summary": "Fedora Security Advisory FEDORA-2026-CED72AB158 vom 2026-04-30",
"url": "https://bodhi.fedoraproject.org/updates/FEDORA-2026-ced72ab158"
},
{
"category": "external",
"summary": "openSUSE Security Update OPENSUSE-SU-2026:11140-1 vom 2026-06-29",
"url": "https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/GQ2A6BC5C5Y4UAZTW2SCWARYRLB5LKRV/"
},
{
"category": "external",
"summary": "openSUSE Security Update OPENSUSE-SU-2026:21228-1 vom 2026-07-04",
"url": "https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/PPUFPVG2PDHIGMI2VUJIOKIZVIJF6W6A/"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2026:22453-1 vom 2026-07-03",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2026-July/027255.html"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2026:22523-1 vom 2026-07-08",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2026-July/027307.html"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2026:22538-1 vom 2026-07-13",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2026-July/027400.html"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2026:2987-1 vom 2026-07-14",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2026-July/027476.html"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2026:3029-1 vom 2026-07-15",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2026-July/027520.html"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2026:3030-1 vom 2026-07-15",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2026-July/027519.html"
},
{
"category": "external",
"summary": "Red Hat Security Advisory RHSA-2026:42694 vom 2026-07-21",
"url": "https://access.redhat.com/errata/RHSA-2026:42694"
},
{
"category": "external",
"summary": "Rocky Linux Security Advisory RLSA-2026:42733 vom 2026-07-22",
"url": "https://errata.build.resf.org/RLSA-2026:42733"
},
{
"category": "external",
"summary": "Red Hat Security Advisory RHSA-2026:42733 vom 2026-07-21",
"url": "https://access.redhat.com/errata/RHSA-2026:42733"
},
{
"category": "external",
"summary": "Red Hat Security Advisory RHSA-2026:42952 vom 2026-07-22",
"url": "https://access.redhat.com/errata/RHSA-2026:42952"
},
{
"category": "external",
"summary": "Rocky Linux Security Advisory RLSA-2026:42952 vom 2026-07-23",
"url": "https://errata.build.resf.org/RLSA-2026:42952"
},
{
"category": "external",
"summary": "Oracle Linux Security Advisory ELSA-2026-42952 vom 2026-07-23",
"url": "https://linux.oracle.com/errata/ELSA-2026-42952.html"
},
{
"category": "external",
"summary": "Rocky Linux Security Advisory RLSA-2026:42694 vom 2026-07-22",
"url": "https://errata.build.resf.org/RLSA-2026:42694"
},
{
"category": "external",
"summary": "Red Hat Security Advisory RHSA-2026:44481 vom 2026-07-23",
"url": "https://access.redhat.com/errata/RHSA-2026:44481"
},
{
"category": "external",
"summary": "Red Hat Security Advisory RHSA-2026:44624 vom 2026-07-23",
"url": "https://access.redhat.com/errata/RHSA-2026:44624"
},
{
"category": "external",
"summary": "Ubuntu Security Notice USN-8611-1 vom 2026-07-27",
"url": "https://ubuntu.com/security/notices/USN-8611-1"
},
{
"category": "external",
"summary": "Red Hat Security Advisory RHSA-2026:46836 vom 2026-07-27",
"url": "https://access.redhat.com/errata/RHSA-2026:46836"
},
{
"category": "external",
"summary": "Oracle Linux Security Advisory ELSA-2026-42733 vom 2026-07-28",
"url": "https://linux.oracle.com/errata/ELSA-2026-42733.html"
},
{
"category": "external",
"summary": "Red Hat Security Advisory RHSA-2026:48151 vom 2026-07-29",
"url": "https://access.redhat.com/errata/RHSA-2026:48151"
},
{
"category": "external",
"summary": "Oracle Linux Security Advisory ELSA-2026-500131 vom 2026-08-05",
"url": "https://linux.oracle.com/errata/ELSA-2026-500131.html"
},
{
"category": "external",
"summary": "Red Hat Security Advisory RHSA-2026:50205 vom 2026-08-04",
"url": "https://access.redhat.com/errata/RHSA-2026:50205"
},
{
"category": "external",
"summary": "Red Hat Security Advisory RHSA-2026:50847 vom 2026-08-05",
"url": "https://access.redhat.com/errata/RHSA-2026:50847"
},
{
"category": "external",
"summary": "Red Hat Security Advisory RHSA-2026:50849 vom 2026-08-05",
"url": "https://access.redhat.com/errata/RHSA-2026:50849"
},
{
"category": "external",
"summary": "Oracle Linux Security Advisory ELSA-2026-500140 vom 2026-08-07",
"url": "https://linux.oracle.com/errata/ELSA-2026-500140.html"
},
{
"category": "external",
"summary": "Red Hat Security Advisory RHSA-2026:53371 vom 2026-08-11",
"url": "https://access.redhat.com/errata/RHSA-2026:53371"
},
{
"category": "external",
"summary": "Dell Security Advisory DSA-2026-386 vom 2026-09-01",
"url": "https://www.dell.com/support/kbdoc/000503504/dsa-2026-386-security-update-f"
}
],
"source_lang": "en-US",
"title": "GNU libc: Mehrere Schwachstellen",
"tracking": {
"current_release_date": "2026-08-31T22:00:00.000+00:00",
"generator": {
"date": "2026-09-01T10:59:01.669+00:00",
"engine": {
"name": "BSI-WID",
"version": "1.6.0"
}
},
"id": "WID-SEC-W-2026-1300",
"initial_release_date": "2026-04-28T22:00:00.000+00:00",
"revision_history": [
{
"date": "2026-04-28T22:00:00.000+00:00",
"number": "1",
"summary": "Initiale Fassung"
},
{
"date": "2026-05-03T22:00:00.000+00:00",
"number": "2",
"summary": "Neue Updates von Fedora und Red Hat aufgenommen"
},
{
"date": "2026-06-29T22:00:00.000+00:00",
"number": "3",
"summary": "Neue Updates von openSUSE aufgenommen"
},
{
"date": "2026-07-05T22:00:00.000+00:00",
"number": "4",
"summary": "Neue Updates von openSUSE und SUSE aufgenommen"
},
{
"date": "2026-07-08T22:00:00.000+00:00",
"number": "5",
"summary": "Neue Updates von SUSE aufgenommen"
},
{
"date": "2026-07-13T22:00:00.000+00:00",
"number": "6",
"summary": "Neue Updates von SUSE aufgenommen"
},
{
"date": "2026-07-14T22:00:00.000+00:00",
"number": "7",
"summary": "Neue Updates von SUSE aufgenommen"
},
{
"date": "2026-07-15T22:00:00.000+00:00",
"number": "8",
"summary": "Neue Updates von SUSE aufgenommen"
},
{
"date": "2026-07-20T22:00:00.000+00:00",
"number": "9",
"summary": "Neue Updates von Red Hat aufgenommen"
},
{
"date": "2026-07-21T22:00:00.000+00:00",
"number": "10",
"summary": "Neue Updates von Rocky Enterprise Software Foundation und Red Hat aufgenommen"
},
{
"date": "2026-07-22T22:00:00.000+00:00",
"number": "11",
"summary": "Neue Updates von Rocky Enterprise Software Foundation und Oracle Linux aufgenommen"
},
{
"date": "2026-07-23T22:00:00.000+00:00",
"number": "12",
"summary": "Neue Updates von Red Hat aufgenommen"
},
{
"date": "2026-07-27T22:00:00.000+00:00",
"number": "13",
"summary": "Neue Updates von Ubuntu und Red Hat aufgenommen"
},
{
"date": "2026-07-29T22:00:00.000+00:00",
"number": "14",
"summary": "Neue Updates von Red Hat aufgenommen"
},
{
"date": "2026-08-04T22:00:00.000+00:00",
"number": "15",
"summary": "Neue Updates von Oracle Linux und Red Hat aufgenommen"
},
{
"date": "2026-08-05T22:00:00.000+00:00",
"number": "16",
"summary": "Neue Updates von Red Hat aufgenommen"
},
{
"date": "2026-08-06T22:00:00.000+00:00",
"number": "17",
"summary": "Neue Updates von Oracle Linux aufgenommen"
},
{
"date": "2026-08-11T22:00:00.000+00:00",
"number": "18",
"summary": "Neue Updates von Red Hat aufgenommen"
},
{
"date": "2026-08-31T22:00:00.000+00:00",
"number": "19",
"summary": "Neue Updates von Dell aufgenommen"
}
],
"status": "final",
"version": "19"
}
},
"product_tree": {
"branches": [
{
"branches": [
{
"branches": [
{
"category": "product_version_range",
"name": "\u003c5.36.00.16",
"product": {
"name": "Dell Secure Connect Gateway \u003c5.36.00.16",
"product_id": "T058878"
}
},
{
"category": "product_version",
"name": "5.36.00.16",
"product": {
"name": "Dell Secure Connect Gateway 5.36.00.16",
"product_id": "T058878-fixed",
"product_identification_helper": {
"cpe": "cpe:/a:dell:secure_connect_gateway:5.36.00.16"
}
}
}
],
"category": "product_name",
"name": "Secure Connect Gateway"
}
],
"category": "vendor",
"name": "Dell"
},
{
"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": "\u003e=2.2",
"product": {
"name": "Open Source GNU libc \u003e=2.2",
"product_id": "T053385"
}
},
{
"category": "product_version_range",
"name": "\u003e=2.2",
"product": {
"name": "Open Source GNU libc \u003e=2.2",
"product_id": "T053385-fixed"
}
}
],
"category": "product_name",
"name": "GNU libc"
}
],
"category": "vendor",
"name": "Open Source"
},
{
"branches": [
{
"category": "product_name",
"name": "Oracle Linux",
"product": {
"name": "Oracle Linux",
"product_id": "T056236",
"product_identification_helper": {
"cpe": "cpe:/o:oracle:linux:-"
}
}
}
],
"category": "vendor",
"name": "Oracle"
},
{
"branches": [
{
"category": "product_name",
"name": "RESF Rocky Linux",
"product": {
"name": "RESF Rocky Linux",
"product_id": "T054581",
"product_identification_helper": {
"cpe": "cpe:/o:resf:rocky_linux:-"
}
}
}
],
"category": "vendor",
"name": "RESF"
},
{
"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": "T055947",
"product_identification_helper": {
"cpe": "cpe:/o:canonical:ubuntu_linux:-"
}
}
}
],
"category": "vendor",
"name": "Ubuntu"
}
]
},
"vulnerabilities": [
{
"cve": "CVE-2026-5435",
"product_status": {
"known_affected": [
"T056236",
"T058878",
"T002207",
"T054581",
"67646",
"T055947",
"T027843",
"74185"
]
},
"release_date": "2026-04-28T22:00:00.000+00:00",
"title": "CVE-2026-5435"
},
{
"cve": "CVE-2026-6238",
"product_status": {
"known_affected": [
"T056236",
"T058878",
"T002207",
"T054581",
"67646",
"T055947",
"T027843",
"74185"
]
},
"release_date": "2026-04-28T22:00:00.000+00:00",
"title": "CVE-2026-6238"
}
]
}
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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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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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