PT-2019-19706 · Sagemcom · Sagemcom F@St 5260

Ryan Delaney · Published 2019-03-05 · Updated 2020-08-24 · CVE-2019-9555

Positive Technologies (AI Summary)

CVSS v3.1

5.3

Medium

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Name of the Vulnerable Software and Affected Versions Sagemcom F@st 5260 version 0.4.39

Description The issue concerns the generation of a Pre-Shared Key (PSK) in WPA mode, which is derived from a 2-part wordlist of known values and a nonce with insufficient entropy. This results in a limited number of possible PSKs, approximately 1.78 billion, making it vulnerable to exploitation.

Recommendations For Sagemcom F@st 5260 version 0.4.39, consider changing the default PSK generation mechanism to one that uses sufficient entropy to produce a more secure key. As a temporary workaround, manually set a strong and unique PSK to minimize the risk of exploitation.

Fix

Weakness Enumeration

CWE-331

Related Identifiers

CVE-2019-9555

Affected Products

Sagemcom F@St 5260

References · 3

• https://osv.dev/vulnerability/CVE-2019-9555 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2019-9555 · Security Note
• https://seclists.org/fulldisclosure/2019/Mar/12 · Note