How severe is CVE-2002-2159?

CVE-2002-2159 has a CVSS 2.0 base score of 10.0, rated critical severity.

Is CVE-2002-2159 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2002-2159?

CVE-2002-2159 primarily affects Linksys Befsr11. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2002-2159?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2002-2159 published?

CVE-2002-2159 was published on 2002-12-31 and last updated on 2026-06-16.

CVE-2002-2159

CVE-2002-2159 is a critical-severity vulnerability in Linksys Befsr11 with a CVSS 2.0 base score of 10.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Critical (CVSS 2.0 base score 10.0)
EPSS exploit prediction: 2% (82nd percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Linksys Befsr11
Published: 2002-12-31
Last modified: 2026-06-16

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2002-2159?: CVE-2002-2159 has a CVSS 2.0 base score of 10.0, rated critical severity.
Is CVE-2002-2159 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2002-2159?: CVE-2002-2159 primarily affects Linksys Befsr11. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2002-2159?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2002-2159 published?: CVE-2002-2159 was published on 2002-12-31 and last updated on 2026-06-16.

References

Affected products (3)

cpe:2.3:h:linksys:befsr11:1.42.7:*:*:*:*:*:*:*
cpe:2.3:h:linksys:befsr41:1.42.7:*:*:*:*:*:*:*
cpe:2.3:h:linksys:befsru31:1.42.7:*:*:*:*:*:*:*