CVE-2023-35311 Microsoft Outlook Security Feature Bypass
Attackers can bypass security features in Microsoft Outlook, potentially exposing users to malicious content or actions.
- Exploited in the wild
- Since 11 Jul 2023
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2023-35311?
CVE-2023-35311 is a high-severity vulnerability in Microsoft 365 Apps, published on 11 Jul 2023. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
Microsoft Outlook Security Feature Bypass Vulnerability
Weakness: CWE-367
Which versions are affected by CVE-2023-35311?
It affects 4 products.
Products include Microsoft 365 Apps, Microsoft Office 2019, Microsoft Office 2021, Microsoft Outlook.
How do I fix CVE-2023-35311?
No fix has been published for CVE-2023-35311 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 1 Aug 2023.
Is CVE-2023-35311 being exploited?
Yes. Attackers have exploited CVE-2023-35311 in the wild since at least 11 Jul 2023.
Other vulnerabilities in Microsoft 365 Apps
- CVE-2024-21413 Microsoft Outlook Improper Input Validation
- CVE-2023-23397 Microsoft Office Outlook Privilege Escalation
- CVE-2024-38189 Microsoft Project Remote Code Execution Vulnerability
- CVE-2026-21514 Microsoft Office Word Reliance on Untrusted Inputs in a Security Decision
- CVE-2026-21509 Microsoft Office Security Feature Bypass
Sources
Also known as GHSA-3w2f-j9r3-9h89.