WID-SEC-W-2026-3291
Vulnerability from csaf_certbund - Published: 2026-09-09 22:00 - Updated: 2026-09-10 22:00Summary
Netty: 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: Netty ist ein asynchrones, ereignisgesteuertes Netzwerk-Anwendungs-Framework für die schnelle Entwicklung von wartbaren, hochleistungsfähigen Protokollservern und -clients.
Angriff: Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Netty ausnutzen, um Denial-of-Service-Zustände zu verursachen, Sicherheitsmaßnahmen zu umgehen, Request- oder Response-Smuggling durchzuführen sowie Daten offenzulegen oder zu manipulieren.
Betroffene Betriebssysteme: - Sonstiges
- UNIX
Affected products
Known affected
2 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
|
Open Source Netty <4.1.138.Final
Open Source / Netty
|
<4.1.138.Final | ||
|
Open Source Netty <4.2.18.Final
Open Source / Netty
|
<4.2.18.Final |
References
32 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": "Netty ist ein asynchrones, ereignisgesteuertes Netzwerk-Anwendungs-Framework f\u00fcr die schnelle Entwicklung von wartbaren, hochleistungsf\u00e4higen Protokollservern und -clients.",
"title": "Produktbeschreibung"
},
{
"category": "summary",
"text": "Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Netty ausnutzen, um Denial-of-Service-Zust\u00e4nde zu verursachen, Sicherheitsma\u00dfnahmen zu umgehen, Request- oder Response-Smuggling durchzuf\u00fchren sowie Daten offenzulegen oder zu manipulieren.",
"title": "Angriff"
},
{
"category": "general",
"text": "- 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-2026-3291 - CSAF Version",
"url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-3291.json"
},
{
"category": "self",
"summary": "WID-SEC-2026-3291 - Portal Version",
"url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-3291"
},
{
"category": "external",
"summary": "Netty Security Advisories vom 2026-09-09",
"url": "https://github.com/netty/netty/security/advisories"
},
{
"category": "external",
"summary": "GitHub Security Advisory GHSA-2g37-3h88-55hc vom 2026-09-09",
"url": "https://github.com/netty/netty/security/advisories/GHSA-2g37-3h88-55hc"
},
{
"category": "external",
"summary": "GitHub Security Advisory GHSA-45h4-vhwh-fmhg vom 2026-09-09",
"url": "https://github.com/netty/netty/security/advisories/GHSA-45h4-vhwh-fmhg"
},
{
"category": "external",
"summary": "GitHub Security Advisory GHSA-495p-pchh-r4mc vom 2026-09-09",
"url": "https://github.com/netty/netty/security/advisories/GHSA-495p-pchh-r4mc"
},
{
"category": "external",
"summary": "GitHub Security Advisory GHSA-5vh9-c45f-rf7p vom 2026-09-09",
"url": "https://github.com/netty/netty/security/advisories/GHSA-5vh9-c45f-rf7p"
},
{
"category": "external",
"summary": "GitHub Security Advisory GHSA-8352-h356-c9qh vom 2026-09-09",
"url": "https://github.com/netty/netty/security/advisories/GHSA-8352-h356-c9qh"
},
{
"category": "external",
"summary": "GitHub Security Advisory GHSA-8whp-c7w8-2m72 vom 2026-09-09",
"url": "https://github.com/netty/netty/security/advisories/GHSA-8whp-c7w8-2m72"
},
{
"category": "external",
"summary": "GitHub Security Advisory GHSA-cg2g-fxr4-mg8m vom 2026-09-09",
"url": "https://github.com/netty/netty/security/advisories/GHSA-cg2g-fxr4-mg8m"
},
{
"category": "external",
"summary": "GitHub Security Advisory GHSA-f64r-x647-cg8w vom 2026-09-09",
"url": "https://github.com/netty/netty/security/advisories/GHSA-f64r-x647-cg8w"
},
{
"category": "external",
"summary": "GitHub Security Advisory GHSA-ghg5-c4jg-8q5j vom 2026-09-09",
"url": "https://github.com/netty/netty/security/advisories/GHSA-ghg5-c4jg-8q5j"
},
{
"category": "external",
"summary": "GitHub Security Advisory GHSA-h75q-xqrh-59rf vom 2026-09-09",
"url": "https://github.com/netty/netty/security/advisories/GHSA-h75q-xqrh-59rf"
},
{
"category": "external",
"summary": "GitHub Security Advisory GHSA-hcvj-94mj-jp5c vom 2026-09-09",
"url": "https://github.com/netty/netty/security/advisories/GHSA-hcvj-94mj-jp5c"
},
{
"category": "external",
"summary": "GitHub Security Advisory GHSA-hfr2-x62w-v49h vom 2026-09-09",
"url": "https://github.com/netty/netty/security/advisories/GHSA-hfr2-x62w-v49h"
},
{
"category": "external",
"summary": "GitHub Security Advisory GHSA-hmf3-49g9-g7qq vom 2026-09-09",
"url": "https://github.com/netty/netty/security/advisories/GHSA-hmf3-49g9-g7qq"
},
{
"category": "external",
"summary": "GitHub Security Advisory GHSA-j4mg-hqgv-34qc vom 2026-09-09",
"url": "https://github.com/netty/netty/security/advisories/GHSA-j4mg-hqgv-34qc"
},
{
"category": "external",
"summary": "GitHub Security Advisory GHSA-j58c-g352-8h4p vom 2026-09-09",
"url": "https://github.com/netty/netty/security/advisories/GHSA-j58c-g352-8h4p"
},
{
"category": "external",
"summary": "GitHub Security Advisory GHSA-jgph-cgq3-c627 vom 2026-09-09",
"url": "https://github.com/netty/netty/security/advisories/GHSA-jgph-cgq3-c627"
},
{
"category": "external",
"summary": "GitHub Security Advisory GHSA-jhjp-5q4f-8wr2 vom 2026-09-09",
"url": "https://github.com/netty/netty/security/advisories/GHSA-jhjp-5q4f-8wr2"
},
{
"category": "external",
"summary": "GitHub Security Advisory GHSA-jj3c-mwvr-9g52 vom 2026-09-09",
"url": "https://github.com/netty/netty/security/advisories/GHSA-jj3c-mwvr-9g52"
},
{
"category": "external",
"summary": "GitHub Security Advisory GHSA-jqf3-r9ww-c5x8 vom 2026-09-09",
"url": "https://github.com/netty/netty/security/advisories/GHSA-jqf3-r9ww-c5x8"
},
{
"category": "external",
"summary": "GitHub Security Advisory GHSA-mj35-3qqm-q387 vom 2026-09-09",
"url": "https://github.com/netty/netty/security/advisories/GHSA-mj35-3qqm-q387"
},
{
"category": "external",
"summary": "GitHub Security Advisory GHSA-pq4x-537v-r54q vom 2026-09-09",
"url": "https://github.com/netty/netty/security/advisories/GHSA-pq4x-537v-r54q"
},
{
"category": "external",
"summary": "GitHub Security Advisory GHSA-pvjx-v7vp-62vq vom 2026-09-09",
"url": "https://github.com/netty/netty/security/advisories/GHSA-pvjx-v7vp-62vq"
},
{
"category": "external",
"summary": "GitHub Security Advisory GHSA-q9pg-8h3j-8hvm vom 2026-09-09",
"url": "https://github.com/netty/netty/security/advisories/GHSA-q9pg-8h3j-8hvm"
},
{
"category": "external",
"summary": "GitHub Security Advisory GHSA-r4xx-7fpg-j8xg vom 2026-09-09",
"url": "https://github.com/netty/netty/security/advisories/GHSA-r4xx-7fpg-j8xg"
},
{
"category": "external",
"summary": "GitHub Security Advisory GHSA-rmcw-9fcq-wjq7 vom 2026-09-09",
"url": "https://github.com/netty/netty/security/advisories/GHSA-rmcw-9fcq-wjq7"
},
{
"category": "external",
"summary": "GitHub Security Advisory GHSA-rq4j-fc47-9698 vom 2026-09-09",
"url": "https://github.com/netty/netty/security/advisories/GHSA-rq4j-fc47-9698"
},
{
"category": "external",
"summary": "GitHub Security Advisory GHSA-v5p2-hmgx-3xrx vom 2026-09-09",
"url": "https://github.com/netty/netty/security/advisories/GHSA-v5p2-hmgx-3xrx"
},
{
"category": "external",
"summary": "GitHub Security Advisory GHSA-w6j8-x45j-w75f vom 2026-09-09",
"url": "https://github.com/netty/netty/security/advisories/GHSA-w6j8-x45j-w75f"
},
{
"category": "external",
"summary": "GitHub Security Advisory GHSA-wxrh-4rgq-pjcg vom 2026-09-09",
"url": "https://github.com/netty/netty/security/advisories/GHSA-wxrh-4rgq-pjcg"
}
],
"source_lang": "en-US",
"title": "Netty: Mehrere Schwachstellen",
"tracking": {
"current_release_date": "2026-09-10T22:00:00.000+00:00",
"generator": {
"date": "2026-09-11T09:13:18.473+00:00",
"engine": {
"name": "BSI-WID",
"version": "1.6.0"
}
},
"id": "WID-SEC-W-2026-3291",
"initial_release_date": "2026-09-09T22:00:00.000+00:00",
"revision_history": [
{
"date": "2026-09-09T22:00:00.000+00:00",
"number": "1",
"summary": "Initiale Fassung"
},
{
"date": "2026-09-10T22:00:00.000+00:00",
"number": "2",
"summary": "Referenz(en) aufgenommen: CVE-2026-89044, EUVD-2026-75633"
}
],
"status": "final",
"version": "2"
}
},
"product_tree": {
"branches": [
{
"branches": [
{
"branches": [
{
"category": "product_version_range",
"name": "\u003c4.2.18.Final",
"product": {
"name": "Open Source Netty \u003c4.2.18.Final",
"product_id": "T059338"
}
},
{
"category": "product_version",
"name": "4.2.18.Final",
"product": {
"name": "Open Source Netty 4.2.18.Final",
"product_id": "T059338-fixed",
"product_identification_helper": {
"cpe": "cpe:/a:netty:netty:4.2.18.final"
}
}
},
{
"category": "product_version_range",
"name": "\u003c4.1.138.Final",
"product": {
"name": "Open Source Netty \u003c4.1.138.Final",
"product_id": "T059339"
}
},
{
"category": "product_version",
"name": "4.1.138.Final",
"product": {
"name": "Open Source Netty 4.1.138.Final",
"product_id": "T059339-fixed",
"product_identification_helper": {
"cpe": "cpe:/a:netty:netty:4.1.138.final"
}
}
}
],
"category": "product_name",
"name": "Netty"
}
],
"category": "vendor",
"name": "Open Source"
}
]
},
"vulnerabilities": [
{
"cve": "CVE-2026-89044",
"product_status": {
"known_affected": [
"T059339",
"T059338"
]
},
"release_date": "2026-09-09T22:00:00.000+00:00",
"title": "CVE-2026-89044"
}
]
}
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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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