CVE-2017-0261VulnerabilityPublished 03/03/2022Updated 10/24/2026

CVE-2017-0261: Microsoft Office Use-After-Free Vulnerability

Affects Microsoft OfficeSource CISA KEV

Severity

High

No CVSS score published yet

Exploitation: Actively exploited – in CISA KEV since 03/03/2022
KEV deadline: 03/24/2022
EPSS: 78.1% 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-2017-0261 (opens in a new tab)

Description

CVE-2017-0261 is a use-after-free vulnerability in Microsoft Office that allows remote code execution. This vulnerability has been exploited in the wild, posing a high risk to affected systems. No specific affected versions or patch information is provided in the available data.

Summary

Microsoft Office contains a use-after-free vulnerability identified as CVE-2017-0261. This vulnerability can be exploited remotely to execute arbitrary code. It has been confirmed to be exploited in the wild. The vulnerability is categorized under CWE-416 (Use After Free). No detailed version or patch information is provided in the source data.

Impact

Successful exploitation of this vulnerability allows remote attackers to execute arbitrary code on affected Microsoft Office installations, potentially leading to full system compromise. The vulnerability has been actively exploited in the wild, increasing the urgency of mitigation.

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 should monitor Microsoft security advisories for updates and apply any available patches promptly.

Weaknesses

CWE-416Use After Free (opens in a new tab)

What to do

Description

AnalysisAI-generated, updated 10/24/2026, 10:26:47 UTC

Weaknesses

References

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