CVE-2026-116926ImportantSpoofingNetwork

Microsoft Teams Spoofing Vulnerability

MSRC advisory NVD CVE.org

Assessment

Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Teams 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: Exploitation Less Likely
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
Weakness: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Issued by: Microsoft
Published: 10 Nov 2026 · November 2026
Last revised: 10 Nov 2026

CVSS 3.1 base metricsRed 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 it

0 KBs

No KB listed

No KB update is listed in the collected MSRC record. Check the MSRC advisory for product releases and other remedies.

Affected products

Microsoft Office

1 affected product

Microsoft Teams for Android

Page history

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Explore global source statements, affected packages and advisory history for CVE-2026-116926. The catalog has a separate collection scope from Microsoft release records.

cve-program · CVE-2026-116926

Published

Microsoft Teams for Android

Vendor product

Original vendor version evidence · not evaluated as a NuGet range

{
                    "vendor": "Microsoft",
                    "product": "Microsoft Teams for Android",
                    "versions": [
                        {
                            "version": "1.0.0",
                            "lessThan": "1416/1.0.0.2026202302",
                            "versionType": "custom",
                            "status": "affected"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON