Is CVE-2017-17497 actively exploited?

No active exploitation of CVE-2017-17497 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2017-17497 be exploited remotely?

Yes. CVE-2017-17497 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2017-17497?

CVE-2017-17497 has a CVSS score of 7.5 (HIGH).

HOME VULNERABILITIESCVE-2017-17497

HIGH

CVE-2017-17497

CWE-119Published: December 10, 2017· Updated: Jun 17, 2026

7.5

CVSS v3.1

Official Description

In Tidy 5.7.0, the prvTidyTidyMetaCharset function in clean.c allows attackers to cause a denial of service (Segmentation Fault), because the currentNode variable in the "children of the head" processing feature is modified in the loop without validating the new value.

NVD Source

Technical Analysis

CVE-2017-17497 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 7.5.

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