Is CVE-2017-2800 actively exploited?

A proof-of-concept exploit is publicly available for CVE-2017-2800, but active exploitation has not been confirmed.

Can CVE-2017-2800 be exploited remotely?

Yes. CVE-2017-2800 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2017-2800?

CVE-2017-2800 has a CVSS score of 9.8 (CRITICAL).

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CRITICALPOC

CVE-2017-2800

CWE-295Published: May 24, 2017· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

A specially crafted x509 certificate can cause a single out of bounds byte overwrite in wolfSSL through 3.10.2 resulting in potential certificate validation vulnerabilities, denial of service and possible remote code execution. In order to trigger this vulnerability, the attacker needs to supply a malicious x509 certificate to either a server or a client application using this library.

NVD Source

Technical Analysis

CVE-2017-2800 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 complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

A proof-of-concept (PoC) exploit exists for CVE-2017-2800. While not yet confirmed in active campaigns, the availability of PoC code increases exploitation risk substantially.