A vulnerability classified as critical has been found in Sagemcom F@st 5260 0.4.39. Affected is some unknown functionality of the component WPA Mode. The manipulation with an unknown input leads to a 7pk security vulnerability. CWE is classifying the issue as CWE-254. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

Sagemcom F@st 5260 routers using firmware version 0.4.39, in WPA mode, default to using a PSK that is generated from a 2-part wordlist of known values and a nonce with insufficient entropy. The number of possible PSKs is about 1.78 billion, which is too small.

The bug was discovered 03/04/2019. The weakness was shared 03/05/2019. This vulnerability is traded as CVE-2019-9555 since 03/04/2019. The exploitability is told to be difficult. The attack can only be initiated within the local network. The exploitation doesn't require any form of authentication. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1211.

The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $0-$5k.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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Vendor

• Sagemcom

Name

• F@st 5260

Version

• 0.4.39

CPE 2.3info

• 🔍

CPE 2.2info

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