WID-SEC-W-2025-2757
Vulnerability from csaf_certbund - Published: 2025-12-07 23:00 - Updated: 2025-12-07 23:00Summary
Nextcloud (Contacts, Talk, Deck und Twofactor WebAuthn): Mehrere Schwachstellen
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
Nextcloud ist eine "on-premise" Plattform für Dateifreigabe und Zusammenarbeit.
Angriff
Ein Angreifer kann mehrere Schwachstellen in Nextcloud ausnutzen, um einen Cross-Site Scripting Angriff durchzuführen, um Dateien zu manipulieren, und um Sicherheitsvorkehrungen zu umgehen.
Betroffene Betriebssysteme
- Linux
- Sonstiges
- UNIX
- Windows
{
"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": "Nextcloud ist eine \"on-premise\" Plattform f\u00fcr Dateifreigabe und Zusammenarbeit.",
"title": "Produktbeschreibung"
},
{
"category": "summary",
"text": "Ein Angreifer kann mehrere Schwachstellen in Nextcloud ausnutzen, um einen Cross-Site Scripting Angriff durchzuf\u00fchren, um Dateien zu manipulieren, und um Sicherheitsvorkehrungen zu umgehen.",
"title": "Angriff"
},
{
"category": "general",
"text": "- Linux\n- Sonstiges\n- UNIX\n- Windows",
"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-2025-2757 - CSAF Version",
"url": "https://wid.cert-bund.de/.well-known/csaf/white/2025/wid-sec-w-2025-2757.json"
},
{
"category": "self",
"summary": "WID-SEC-2025-2757 - Portal Version",
"url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2025-2757"
},
{
"category": "external",
"summary": "Nextcloud Security Advisory vom 2025-12-07",
"url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-pr9f-vqgg-m2jh"
},
{
"category": "external",
"summary": "Nextcloud Security Advisory vom 2025-12-07",
"url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-fr8x-mvjg-wf9q"
},
{
"category": "external",
"summary": "Nextcloud Security Advisory vom 2025-12-07",
"url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-9v78-cpfc-v6h2"
},
{
"category": "external",
"summary": "Nextcloud Security Advisory vom 2025-12-07",
"url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-wwr8-hx9g-rjvv"
}
],
"source_lang": "en-US",
"title": "Nextcloud (Contacts, Talk, Deck und Twofactor WebAuthn): Mehrere Schwachstellen",
"tracking": {
"current_release_date": "2025-12-07T23:00:00.000+00:00",
"generator": {
"date": "2025-12-08T10:55:03.508+00:00",
"engine": {
"name": "BSI-WID",
"version": "1.5.0"
}
},
"id": "WID-SEC-W-2025-2757",
"initial_release_date": "2025-12-07T23:00:00.000+00:00",
"revision_history": [
{
"date": "2025-12-07T23:00:00.000+00:00",
"number": "1",
"summary": "Initiale Fassung"
}
],
"status": "final",
"version": "1"
}
},
"product_tree": {
"branches": [
{
"branches": [
{
"branches": [
{
"category": "product_version_range",
"name": "Deck \u003c1.14.6",
"product": {
"name": "Nextcloud Nextcloud Deck \u003c1.14.6",
"product_id": "T049175"
}
},
{
"category": "product_version",
"name": "Deck 1.14.6",
"product": {
"name": "Nextcloud Nextcloud Deck 1.14.6",
"product_id": "T049175-fixed",
"product_identification_helper": {
"cpe": "cpe:/a:nextcloud:nextcloud:deck__1.14.6"
}
}
},
{
"category": "product_version_range",
"name": "Deck \u003c1.15.2",
"product": {
"name": "Nextcloud Nextcloud Deck \u003c1.15.2",
"product_id": "T049176"
}
},
{
"category": "product_version",
"name": "Deck 1.15.2",
"product": {
"name": "Nextcloud Nextcloud Deck 1.15.2",
"product_id": "T049176-fixed",
"product_identification_helper": {
"cpe": "cpe:/a:nextcloud:nextcloud:deck__1.15.2"
}
}
},
{
"category": "product_version_range",
"name": "Contacts \u003c5.5.4",
"product": {
"name": "Nextcloud Nextcloud Contacts \u003c5.5.4",
"product_id": "T049177"
}
},
{
"category": "product_version",
"name": "Contacts 5.5.4",
"product": {
"name": "Nextcloud Nextcloud Contacts 5.5.4",
"product_id": "T049177-fixed",
"product_identification_helper": {
"cpe": "cpe:/a:nextcloud:nextcloud:contacts__5.5.4"
}
}
},
{
"category": "product_version_range",
"name": "Contacts \u003c6.0.6",
"product": {
"name": "Nextcloud Nextcloud Contacts \u003c6.0.6",
"product_id": "T049178"
}
},
{
"category": "product_version",
"name": "Contacts 6.0.6",
"product": {
"name": "Nextcloud Nextcloud Contacts 6.0.6",
"product_id": "T049178-fixed",
"product_identification_helper": {
"cpe": "cpe:/a:nextcloud:nextcloud:contacts__6.0.6"
}
}
},
{
"category": "product_version_range",
"name": "Contacts \u003c7.2.5",
"product": {
"name": "Nextcloud Nextcloud Contacts \u003c7.2.5",
"product_id": "T049179"
}
},
{
"category": "product_version",
"name": "Contacts 7.2.5",
"product": {
"name": "Nextcloud Nextcloud Contacts 7.2.5",
"product_id": "T049179-fixed",
"product_identification_helper": {
"cpe": "cpe:/a:nextcloud:nextcloud:contacts__7.2.5"
}
}
},
{
"category": "product_version_range",
"name": "Twofactor WebAuthn \u003c1.4.2",
"product": {
"name": "Nextcloud Nextcloud Twofactor WebAuthn \u003c1.4.2",
"product_id": "T049180"
}
},
{
"category": "product_version",
"name": "Twofactor WebAuthn 1.4.2",
"product": {
"name": "Nextcloud Nextcloud Twofactor WebAuthn 1.4.2",
"product_id": "T049180-fixed",
"product_identification_helper": {
"cpe": "cpe:/a:nextcloud:nextcloud:twofactor_webauthn__1.4.2"
}
}
},
{
"category": "product_version_range",
"name": "Twofactor WebAuthn \u003c2.4.1",
"product": {
"name": "Nextcloud Nextcloud Twofactor WebAuthn \u003c2.4.1",
"product_id": "T049181"
}
},
{
"category": "product_version",
"name": "Twofactor WebAuthn 2.4.1",
"product": {
"name": "Nextcloud Nextcloud Twofactor WebAuthn 2.4.1",
"product_id": "T049181-fixed",
"product_identification_helper": {
"cpe": "cpe:/a:nextcloud:nextcloud:twofactor_webauthn__2.4.1"
}
}
},
{
"category": "product_version_range",
"name": "Talk \u003c20.1.8",
"product": {
"name": "Nextcloud Nextcloud Talk \u003c20.1.8",
"product_id": "T049182"
}
},
{
"category": "product_version",
"name": "Talk 20.1.8",
"product": {
"name": "Nextcloud Nextcloud Talk 20.1.8",
"product_id": "T049182-fixed",
"product_identification_helper": {
"cpe": "cpe:/a:nextcloud:nextcloud:talk__20.1.8"
}
}
},
{
"category": "product_version_range",
"name": "Talk \u003c21.1.2",
"product": {
"name": "Nextcloud Nextcloud Talk \u003c21.1.2",
"product_id": "T049183"
}
},
{
"category": "product_version",
"name": "Talk 21.1.2",
"product": {
"name": "Nextcloud Nextcloud Talk 21.1.2",
"product_id": "T049183-fixed",
"product_identification_helper": {
"cpe": "cpe:/a:nextcloud:nextcloud:talk__21.1.2"
}
}
}
],
"category": "product_name",
"name": "Nextcloud"
}
],
"category": "vendor",
"name": "Nextcloud"
}
]
},
"vulnerabilities": [
{
"cve": "CVE-2025-66554",
"product_status": {
"known_affected": [
"T049179",
"T049178",
"T049177"
]
},
"release_date": "2025-12-07T23:00:00.000+00:00",
"title": "CVE-2025-66554"
},
{
"cve": "CVE-2025-66556",
"product_status": {
"known_affected": [
"T049183",
"T049182"
]
},
"release_date": "2025-12-07T23:00:00.000+00:00",
"title": "CVE-2025-66556"
},
{
"cve": "CVE-2025-66557",
"product_status": {
"known_affected": [
"T049176",
"T049175"
]
},
"release_date": "2025-12-07T23:00:00.000+00:00",
"title": "CVE-2025-66557"
},
{
"cve": "CVE-2025-66558",
"product_status": {
"known_affected": [
"T049181",
"T049180"
]
},
"release_date": "2025-12-07T23:00:00.000+00:00",
"title": "CVE-2025-66558"
}
]
}
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Sightings
| Author | Source | Type | Date |
|---|
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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