CVE-2023-35311

Microsoft Outlook Security Feature Bypass Vulnerability

CVSS v3 8.8 HIGH

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-35311	Patch Vendor Advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-35311	Patch Vendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-35311

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:microsoft:365_apps:-::::enterprise:::
	cpe:2.3:a:microsoft:office:2019:::::::*
	cpe:2.3:a:microsoft:office_long_term_servicing_channel:2021:::::::*
	cpe:2.3:a:microsoft:outlook:2013:-:-::-:-::*
	cpe:2.3:a:microsoft:outlook:2013:sp1:::rt:::*
	cpe:2.3:a:microsoft:outlook:2016:::::::*

History

21 Oct 2025, 23:16

Type	Values Removed	Values Added
References		() https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-35311 -

21 Oct 2025, 20:19

Type	Values Removed	Values Added
References	~~{'url': 'https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-35311', 'source': '134c704f-9b21-4f2e-91b3-4a467353bcc0'}~~

21 Oct 2025, 19:20

Type	Values Removed	Values Added
References		() https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-35311 -

23 Jan 2025, 18:30

Type	Values Removed	Values Added
CPE	cpe:2.3:a:microsoft:office:2021::::ltsc:::	cpe:2.3:a:microsoft:office_long_term_servicing_channel:2021:::::::*
First Time		Microsoft office Long Term Servicing Channel

Information

Published : 2023-07-11 18:15

Updated : 2025-10-21 23:16

NVD link : CVE-2023-35311

Mitre link : CVE-2023-35311

CVE.ORG link : CVE-2023-35311

JSON object : View

Products Affected

microsoft

office_long_term_servicing_channel
outlook
office
365_apps

CWE

CWE-367

Time-of-check Time-of-use (TOCTOU) Race Condition

{"id": "CVE-2023-35311", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "secure@microsoft.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.8, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 2.8}, {"type": "Secondary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "HIGH", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.6}, {"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "HIGH", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.6}]}, "published": "2023-07-11T18:15:17.177", "references": [{"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-35311", "tags": ["Patch", "Vendor Advisory"], "source": "secure@microsoft.com"}, {"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-35311", "tags": ["Patch", "Vendor Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-35311", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Secondary", "source": "secure@microsoft.com", "description": [{"lang": "en", "value": "CWE-367"}]}, {"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-367"}]}, {"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "description": [{"lang": "en", "value": "CWE-367"}]}], "descriptions": [{"lang": "en", "value": "Microsoft Outlook Security Feature Bypass Vulnerability"}], "lastModified": "2025-10-21T23:16:04.220", "cisaActionDue": "2023-08-01", "cisaExploitAdd": "2023-07-11", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:microsoft:365_apps:-:*:*:*:enterprise:*:*:*", "vulnerable": true, "matchCriteriaId": "40C15EDD-98D4-4D06-BA06-21AE0F33C72D"}, {"criteria": "cpe:2.3:a:microsoft:office:2019:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "FF177984-A906-43FA-BF60-298133FBBD6B"}, {"criteria": "cpe:2.3:a:microsoft:office_long_term_servicing_channel:2021:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "0B3EF1E5-4757-4CFA-AE72-6BA876D3C9FD"}, {"criteria": "cpe:2.3:a:microsoft:outlook:2013:-:-:*:-:-:*:*", "vulnerable": true, "matchCriteriaId": "77F369D5-6771-4141-A116-50FB275A937A"}, {"criteria": "cpe:2.3:a:microsoft:outlook:2013:sp1:*:*:rt:*:*:*", "vulnerable": true, "matchCriteriaId": "DDA98A76-D0D1-4BFA-BEAC-1C2313F7B859"}, {"criteria": "cpe:2.3:a:microsoft:outlook:2016:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E2B1657C-0FF4-461A-BE2A-641275C4B0A0"}], "operator": "OR"}]}], "sourceIdentifier": "secure@microsoft.com", "cisaRequiredAction": "Apply updates per vendor instructions or discontinue use of the product if updates are unavailable.", "cisaVulnerabilityName": "Microsoft Outlook Security Feature Bypass Vulnerability"}