CVE-2026-124194

Microsoft Outlook Spoofing Vulnerability

CVSS 3.1 6.5 MEDIUMCheck source for fixed versionsKEV status unknown

Original advisory

Historical advisory recorded 10 Nov 2026 20:21:22 UTC. Read the latest advisory.

cve-program · CVE-2026-124194

Published

Product ui does not warn user of unsafe actions in Microsoft Office Outlook allows an unauthorized attacker to perform spoofing over a network.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-124194

Published

Microsoft 365 Apps for Enterprise

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Microsoft",
                    "product": "Microsoft 365 Apps for Enterprise",
                    "platforms": [
                        "32-bit Systems",
                        "x64-based Systems"
                    ],
                    "versions": [
                        {
                            "version": "16.0.1",
                            "lessThan": "https://aka.ms/OfficeSecurityReleases",
                            "versionType": "custom",
                            "status": "affected"
                        }
                    ]
                }

Microsoft Office LTSC 2021

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Microsoft",
                    "product": "Microsoft Office LTSC 2021",
                    "platforms": [
                        "32-bit Systems",
                        "x64-based Systems"
                    ],
                    "versions": [
                        {
                            "version": "16.0.1",
                            "lessThan": "16.0.14334.21048",
                            "versionType": "custom",
                            "status": "affected"
                        }
                    ]
                }

Microsoft Office LTSC 2024

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Microsoft",
                    "product": "Microsoft Office LTSC 2024",
                    "platforms": [
                        "32-bit Systems",
                        "x64-based Systems"
                    ],
                    "versions": [
                        {
                            "version": "16.0.0",
                            "lessThan": "16.0.17932.21140",
                            "versionType": "custom",
                            "status": "affected"
                        }
                    ]
                }

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