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CVE-2023-35311CISA KEV

Microsoft Outlook Security Feature Bypass Vulnerability

CISA lists this Microsoft vulnerability as known exploited. Its MSRC release detail is outside this installation's collected history.

CISA KEV Check MSRC

CISA catalog record

Microsoft Outlook contains a security feature bypass vulnerability that allows an attacker to bypass the Microsoft Outlook Security Notice prompt.

Product: Outlook
Added to KEV: 11 Jul 2023
Federal remediation due: 1 Aug 2023
Known ransomware use: Not reported

Page history

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Field-level log (2)

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23 Oct 2026 · 09:33:49 UTC Source coverage: cisa-kevIncomplete → Current
23 Oct 2026 · 08:31:50 UTC Source coverage: cisa-kevCurrent → Incomplete

Explore global source statements, affected packages and advisory history for CVE-2023-35311. The catalog has a separate collection scope from Microsoft release records.

cve-program · CVE-2023-35311

Published

Microsoft 365 Apps for Enterprise

Vendor product

Original vendor version evidence · not evaluated as a NuGet range

{
                    "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

Original vendor version evidence · not evaluated as a NuGet range

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

Microsoft Office 2019

Vendor product

Original vendor version evidence · not evaluated as a NuGet range

{
                    "vendor": "Microsoft",
                    "product": "Microsoft Office 2019",
                    "platforms": [
                        "32-bit Systems",
                        "x64-based Systems"
                    ],
                    "versions": [
                        {
                            "version": "19.0.0",
                            "lessThan": "https://aka.ms/OfficeSecurityReleases",
                            "versionType": "custom",
                            "status": "affected"
                        }
                    ]
                }

Microsoft Outlook 2016

Vendor product

Original vendor version evidence · not evaluated as a NuGet range

{
                    "vendor": "Microsoft",
                    "product": "Microsoft Outlook 2016",
                    "platforms": [
                        "32-bit Systems",
                        "x64-based Systems"
                    ],
                    "versions": [
                        {
                            "version": "16.0.0.0",
                            "lessThan": "16.0.5404.1000",
                            "versionType": "custom",
                            "status": "affected"
                        }
                    ]
                }

Microsoft Outlook 2013

Vendor product

Original vendor version evidence · not evaluated as a NuGet range

{
                    "vendor": "Microsoft",
                    "product": "Microsoft Outlook 2013",
                    "platforms": [
                        "32-bit Systems",
                        "x64-based Systems"
                    ],
                    "versions": [
                        {
                            "version": "14.0.0",
                            "lessThan": "15.0.5571.1000",
                            "versionType": "custom",
                            "status": "affected"
                        }
                    ]
                }

Microsoft Outlook 2013 Service Pack 1

Vendor product

Original vendor version evidence · not evaluated as a NuGet range

{
                    "vendor": "Microsoft",
                    "product": "Microsoft Outlook 2013 Service Pack 1",
                    "platforms": [
                        "ARM64-based Systems"
                    ],
                    "versions": [
                        {
                            "version": "15.0.0.0",
                            "lessThan": "15.0.5571.1000",
                            "versionType": "custom",
                            "status": "affected"
                        }
                    ]
                }

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