Is CVE-2017-6363 actively exploited?

No active exploitation of CVE-2017-6363 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2017-6363 be exploited remotely?

Yes. CVE-2017-6363 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2017-6363?

CVE-2017-6363 has a CVSS score of 8.1 (HIGH).

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HIGH

CVE-2017-6363

CWE-125Published: February 27, 2020· Updated: Jun 17, 2026

8.1

CVSS v3.1

Official Description

In the GD Graphics Library (aka LibGD) through 2.2.5, there is a heap-based buffer over-read in tiffWriter in gd_tiff.c. NOTE: the vendor says "In my opinion this issue should not have a CVE, since the GD and GD2 formats are documented to be 'obsolete, and should only be used for development and testing purposes.'

NVD Source

Technical Analysis

CVE-2017-6363 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), availability disruption (denial of service), with a CVSS base score of 8.1.