Is CVE-2017-6552 actively exploited?

A proof-of-concept exploit is publicly available for CVE-2017-6552, but active exploitation has not been confirmed.

Can CVE-2017-6552 be exploited remotely?

Yes. CVE-2017-6552 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2017-6552?

CVE-2017-6552 has a CVSS score of 7.5 (HIGH).

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HIGHPOC

CVE-2017-6552

CWE-400Published: March 9, 2017· Updated: Jun 17, 2026

7.5

CVSS v3.1

Official Description

Livebox 3 Sagemcom SG30_sip-fr-5.15.8.1 devices have an insufficiently large default value for the maximum IPv6 routing table size: it can be filled within minutes. An attacker can exploit this issue to render the affected system unresponsive, resulting in a denial-of-service condition for telephone, Internet, and TV services.

NVD Source

Technical Analysis

CVE-2017-6552 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.

A proof-of-concept (PoC) exploit exists for CVE-2017-6552. While not yet confirmed in active campaigns, the availability of PoC code increases exploitation risk substantially.