CVE-2017-6552

CVE-2017-6552 is a high-severity vulnerability in Sagemcom Livebox Firmware with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-400.

Key facts

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.

Frequently asked questions

What is CVE-2017-6552?
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.
How severe is CVE-2017-6552?
CVE-2017-6552 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2017-6552 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-6552?
CVE-2017-6552 affects Sagemcom Livebox Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-6552?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2017-6552 published?
CVE-2017-6552 was published on 2017-03-09 and last updated on 2026-06-17.

References

Affected products (1)

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