7.5Hoch

CVE-2026-21260Microsoft Outlook Spoofing Vulnerability

Microsoft Microsoft 365 Apps for Enterprise; Microsoft Microsoft Office 2019; Microsoft Microsoft Office LTSC 2021; Microsoft Microsoft Office LTSC 2024 Veröffentlicht: 2026-02-10 20:51 (vor 9 Monaten)

Beschreibung

Exposure of sensitive information to an unauthorized actor in Microsoft Office Outlook allows an unauthorized attacker to perform spoofing over a network.

Schwachstellentyp (CWE): CWE-200

Daten: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Wiedergegeben wie in der Quelle, auf Englisch.

Betroffene Produkte und Versionen

Hersteller	Produkt	Versionen
microsoft	365 apps	16.0.1 – < https://aka.ms/OfficeSecurityReleases
Microsoft	Microsoft 365 Apps for Enterprise	16.0.1 – < https://aka.ms/OfficeSecurityReleases
Microsoft	Microsoft Office 2019	19.0.0 – < https://aka.ms/OfficeSecurityReleases
Microsoft	Microsoft Office LTSC 2021	16.0.1 – < https://aka.ms/OfficeSecurityReleases
Microsoft	Microsoft Office LTSC 2024	16.0.0 – < https://aka.ms/OfficeSecurityReleases
Microsoft	Microsoft Outlook 2016	16.0.0.0 – < 16.0.5539.1002
Microsoft	Microsoft SharePoint Enterprise Server 2016	16.0.0 – < 16.0.5539.1002
Microsoft	Microsoft SharePoint Server 2019	16.0.0 – < 16.0.10417.20097
Microsoft	Microsoft SharePoint Server Subscription Edition	16.0.0 – < 16.0.19127.20518
microsoft	office	2019
microsoft	office 2019	19.0.0 – < https://aka.ms/OfficeSecurityReleases
microsoft	office 2021	16.0.1 – < https://aka.ms/OfficeSecurityReleases
microsoft	office 2024	16.0.0 – < https://aka.ms/OfficeSecurityReleases
microsoft	office long term servicing channel	2021
microsoft	outlook	2016
microsoft	outlook 2016	16.0.0.0 – < 16.0.5539.1002
microsoft	sharepoint server	16.0.0 – < 16.0.19127.20518
microsoft	sharepoint server 2016	16.0.0 – < 16.0.5539.1002
microsoft	sharepoint server 2019	16.0.0 – < 16.0.10417.20097

Referenzen und Patches

Microsoft Outlook Spoofing Vulnerability vendor-advisorypatchVendor Advisory

CPE-Treffer (NVD) (13)

cpe:2.3:a:microsoft:365_apps:-:*:*:*:enterprise:*:x64:*
cpe:2.3:a:microsoft:365_apps:-:*:*:*:enterprise:*:x86:*
cpe:2.3:a:microsoft:office:2019:*:*:*:*:*:x64:*
cpe:2.3:a:microsoft:office:2019:*:*:*:*:*:x86:*
cpe:2.3:a:microsoft:office_long_term_servicing_channel:2021:*:*:*:*:-:x64:*
cpe:2.3:a:microsoft:office_long_term_servicing_channel:2021:*:*:*:*:-:x86:*
cpe:2.3:a:microsoft:office_long_term_servicing_channel:2024:*:*:*:*:-:x64:*
cpe:2.3:a:microsoft:office_long_term_servicing_channel:2024:*:*:*:*:-:x86:*
cpe:2.3:a:microsoft:outlook:2016:*:*:*:*:*:x64:*
cpe:2.3:a:microsoft:outlook:2016:*:*:*:*:*:x86:*
cpe:2.3:a:microsoft:sharepoint_server:*:*:*:*:subscription:*:*:* < 16.0.19127.20518
cpe:2.3:a:microsoft:sharepoint_server:2016:*:*:*:enterprise:*:*:*
cpe:2.3:a:microsoft:sharepoint_server:2019:*:*:*:*:*:*:*

CVSS-Score

7.5Hoch

Quelle: microsoft · CVSS 3.1

Angriffsvektor: Netzwerk
Komplexität: Niedrig
Rechte erforderlich: Keine
Benutzerinteraktion: Keine
Geltungsbereich: Unverändert
Vertraulichkeit: Hoch
Integrität: Keine
Verfügbarkeit: Keine

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C

Alle Scores (2)

cna	CVSS 3.1	7.5Hoch
secure@microsoft.com	CVSS 3.1	7.5Hoch

EPSS (Ausnutzungswahrscheinlichkeit in 30 Tagen)

1.50%

höher als 75 % aller CVEs

CISA-Bewertung (SSVC)

Ausnutzung: none
Automatisierbar: yes
Technische Auswirkung: partial

Zeitverlauf

ID reserviert2025-12-11
Veröffentlicht2026-02-10 20:51
Bei IP-DB eingegangen2026-10-24 23:49
Zuletzt aktualisiert2026-08-19 19:25

Vergeben von (CNA): microsoft
NVD-Status: Analyzed

In der Quelle ansehen: CVE.org · NVD

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