Is CVE-2017-2789 actively exploited?

No active exploitation of CVE-2017-2789 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2017-2789 be exploited remotely?

Yes. CVE-2017-2789 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2017-2789?

CVE-2017-2789 has a CVSS score of 8.8 (HIGH).

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HIGH

CVE-2017-2789

CWE-119Published: February 24, 2017· Updated: Jun 17, 2026

8.8

CVSS v3.1

Official Description

When copying filedata into a buffer, JustSystems Ichitaro Office 2016 Trial will calculate two values to determine how much data to copy from the document. If both of these values are larger than the size of the buffer, the application will choose the smaller of the two and trust it to copy data from the file. This value is larger than the buffer size, which leads to a heap-based buffer overflow. This overflow corrupts an offset in the heap used in pointer arithmetic for writing data and can lead to code execution under the context of the application.

NVD Source

Technical Analysis

CVE-2017-2789 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.8.

From a weakness classification perspective (CWE-119): Buffer overflow vulnerabilities can lead to arbitrary code execution or denial of service by corrupting adjacent memory.