CVEvulnerability
CVE-2023-35311
CISA Known Exploited Vulnerability
Microsoft Outlook Security Feature Bypass Vulnerability — Microsoft Outlook
Microsoft Outlook contains a security feature bypass vulnerability that allows an attacker to bypass the Microsoft Outlook Security Notice prompt.
- Added to KEV
- 2023-07-11
- Remediation due
- 2023-08-01
- Ransomware use
- Unknown
- Required action
- Apply updates per vendor instructions or discontinue use of the product if updates are unavailable.
- Notes
- https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2023-35311; https://nvd.nist.gov/vuln/detail/CVE-2023-35311
- Status
- Analyzed
- Published
- 2023-07-11
- Last modified
- 2026-10-08
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 8.8 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- CVSS 3.1 ([email protected])
- 7.5 HIGH — CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-367
Description
Microsoft Outlook Security Feature Bypass Vulnerability
Affected configurations
• microsoft 365 apps
• microsoft office 2019
• microsoft office 2021
• microsoft outlook 2013
• microsoft outlook 2016
Related
Weakness · CWE (1)
- CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition weakness
References
- 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 US Government Resource