How severe is CVE-2005-4258?

CVE-2005-4258 has a CVSS 2.0 base score of 7.8, rated high severity.

Is CVE-2005-4258 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2005-4258?

CVE-2005-4258 primarily affects Cisco Catalyst. In total, 167 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2005-4258?

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-2005-4258 published?

CVE-2005-4258 was published on 2005-12-15 and last updated on 2026-06-16.

CVE-2005-4258

CVE-2005-4258 is a high-severity vulnerability in Cisco Catalyst with a CVSS 2.0 base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 2.0 base score 7.8)
EPSS exploit prediction: 2% (79th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Cisco Catalyst
Published: 2005-12-15
Last modified: 2026-06-16

Description

Unspecified Cisco Catalyst Switches allow remote attackers to cause a denial of service (device crash) via an IP packet with the same source and destination IPs and ports, and with the SYN flag set (aka LanD). NOTE: the provenance of this issue is unknown; the details are obtained solely from the BID.

Frequently asked questions

What is CVE-2005-4258?: Unspecified Cisco Catalyst Switches allow remote attackers to cause a denial of service (device crash) via an IP packet with the same source and destination IPs and ports, and with the SYN flag set (aka LanD). NOTE: the provenance of this issue is unknown; the details are obtained solely from the BID.
How severe is CVE-2005-4258?: CVE-2005-4258 has a CVSS 2.0 base score of 7.8, rated high severity.
Is CVE-2005-4258 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2005-4258?: CVE-2005-4258 primarily affects Cisco Catalyst. In total, 167 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2005-4258?: 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-2005-4258 published?: CVE-2005-4258 was published on 2005-12-15 and last updated on 2026-06-16.

References

Affected products (167)

cpe:2.3:h:cisco:catalyst:4.5_\(10\):*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst:sup2plus:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst:sup3:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_1200_series:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_1900_series:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_1900_series:9.0_0.07:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_2800_series:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_2820:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_2820:9.0_0.07:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_2900:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_2900:lre_xl:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_2900:xl:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_2901:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_2902:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_2920:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_2926:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_2926f:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_2926gl:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_2926gs:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_2926t:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_2940:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_2948:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_2948-ge-tx:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_2948g-l3:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_2950:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_2950_lre:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_2955:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_2970:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_2980g:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_2980g-a:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_3000:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_3200:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_3500_xl:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_3550:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_3560:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_3750:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_3750_metro:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_3900:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_4000:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_4000:*:*:sup2plus:*:*:*:*:*

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