Security November 2026 CVE-2026-69901
AssessmentOrigin validation error in Microsoft Teams for Android allows an unauthorized attacker to perform spoofing over a network.
Severity Important
CVSS base score 7.5
Impact Spoofing
Exploitation detected No known exploitation (MSRC assessment)
Exploitability Not assessed
Publicly disclosed No (MSRC assessment)
EPSS · 30-day forecast No EPSS score collected
Customer action Required: follow the MSRC remediation guidance
More details
CVSS vector 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
Public detection template No Nuclei template is listed in the current collected catalog
Component Microsoft Teams for Android
Weakness CWE-346: Origin Validation Error
Issued by Microsoft
Last revised 10 Nov 2026 CVSS 3.1 base metrics Red raises the risk · green lowers it
Attack vector NetworkAV:N
Attack complexity LowAC:L
Privileges required NonePR:N
User interaction NoneUI:N
Scope UnchangedS:U
Confidentiality HighC:H
Integrity NoneI:N
Availability NoneA:N
Updates that fix it0 KBs No KB listed No KB update is listed in the collected MSRC record. Check the MSRC advisory for product releases and other remedies.
Source. This summary comes from MSRC's public CVRF document for November 2026. If the MSRC page is blocked in your browser, the NVD and CVE.org records carry the same identifier. None of this says whether your devices are affected.
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Explore global source statements, affected packages and advisory history for CVE-2026-69901 . The catalog has a separate collection scope from Microsoft release records.