Is CVE-2017-2790 actively exploited?

No active exploitation of CVE-2017-2790 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2017-2790 be exploited remotely?

Yes. CVE-2017-2790 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2017-2790?

CVE-2017-2790 has a CVSS score of 8.8 (HIGH).

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HIGH

CVE-2017-2790

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

8.8

CVSS v3.1

Official Description

When processing a record type of 0x3c from a Workbook stream from an Excel file (.xls), JustSystems Ichitaro Office trusts that the size is greater than zero, subtracts one from the length, and uses this result as the size for a memcpy. This results in a heap-based buffer overflow and can lead to code execution under the context of the application.

NVD Source

Technical Analysis

CVE-2017-2790 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.