CVE-2002-2159

Linksys EtherFast Cable/DSL BEFSR11, BEFSR41 and BEFSRU31 with the firmware 1.42.7 upgrade installed opens TCP port 5678 for remote administration even when the "Block WAN" and "Remote Admin" options are disabled, which allows remote attackers to gain access.

Published: 2002-12-31 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2002-2159 is rated High Risk (70.1/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 2.44%). EPSS rose +1.32% over the last day, indicating growing attacker interest. High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2002-2159

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 1.12% 2.44% +1.32%
2 2026-03-28 0.93% 1.12% +0.19%
3 2025-03-30 — 0.93% —

Full EPSS history (11 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2002-2159

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
10.0 2.0 HIGH
AV:N/AC:L/Au:N/C:C/I:C/A:C Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 10.0 10.0 [email protected]

Weakness enumeration for CVE-2002-2159

Affected software / configurations for CVE-2002-2159

Vendor Product Version Raw CPE
linksys befsr11 1.42.7 cpe:2.3:h:linksys:befsr11:1.42.7:*:*:*:*:*:*:*
linksys befsr41 1.42.7 cpe:2.3:h:linksys:befsr41:1.42.7:*:*:*:*:*:*:*
linksys befsru31 1.42.7 cpe:2.3:h:linksys:befsru31:1.42.7:*:*:*:*:*:*:*

References for CVE-2002-2159

cvelogic Threat Intelligence