CVE-2017-11774VulnerabilityPublished 11/03/2021Updated 10/24/2026

CVE-2017-11774: Microsoft Office Outlook Security Feature Bypass Vulnerability

Affects Microsoft OfficeSource CISA KEV

Severity

High

No CVSS score published yet

Exploitation: Actively exploited – in CISA KEV since 11/03/2021
KEV deadline: 05/03/2022
EPSS: 59.6% chance of exploitation in 30 days – higher than 99% of CVEs

What to do

CISA required action

Apply updates per vendor instructions.

nvd.nist.gov/vuln/detail/CVE-2017-11774 (opens in a new tab)

Description

CVE-2017-11774 is a security feature bypass vulnerability in Microsoft Office Outlook caused by improper handling of objects in memory. Exploiting this flaw allows attackers to execute arbitrary commands. The vulnerability has been exploited in the wild, indicating active threat usage. No specific affected versions or patch information is provided in the available data.

Summary

Microsoft Office Outlook contains a security feature bypass vulnerability (CVE-2017-11774) due to improper handling of objects in memory. This flaw enables an attacker to execute commands by bypassing security features. The vulnerability is known to be exploited in the wild, highlighting its practical risk. No detailed version information or patch status is included in the provided data.

Impact

Successful exploitation of this vulnerability allows attackers to execute arbitrary commands within the context of the affected Outlook process, potentially leading to unauthorized actions or compromise of the user's environment. The presence of known exploitation in the wild increases the urgency and risk associated with this vulnerability.

Mitigation

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no patch or official fix information is provided, users and administrators should monitor Microsoft advisories for updates and apply any available security updates promptly once released.

Weaknesses

CWE-119Buffer Errors (Memory Bounds) (opens in a new tab)

What to do

Description

AnalysisAI-generated, updated 10/24/2026, 09:11:07 UTC

Weaknesses

References

Related threats