How severe is CVE-1999-0430?

CVE-1999-0430 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-1999-0430 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-1999-0430?

CVE-1999-0430 primarily affects Cisco Catalyst 12xx Supervisor Software. In total, 9 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-1999-0430?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-1999-0430 published?

CVE-1999-0430 was published on 1999-03-01 and last updated on 2026-06-16.

CVE-1999-0430

CVE-1999-0430 is a medium-severity vulnerability in Cisco Catalyst 12xx Supervisor Software with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 2% (76th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Cisco Catalyst 12xx Supervisor Software
Published: 1999-03-01
Last modified: 2026-06-16

Description

Cisco Catalyst LAN switches running Catalyst 5000 supervisor software allows remote attackers to perform a denial of service by forcing the supervisor module to reload.

Frequently asked questions

What is CVE-1999-0430?: Cisco Catalyst LAN switches running Catalyst 5000 supervisor software allows remote attackers to perform a denial of service by forcing the supervisor module to reload.
How severe is CVE-1999-0430?: CVE-1999-0430 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-1999-0430 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-1999-0430?: CVE-1999-0430 primarily affects Cisco Catalyst 12xx Supervisor Software. In total, 9 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-1999-0430?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-1999-0430 published?: CVE-1999-0430 was published on 1999-03-01 and last updated on 2026-06-16.

References

http://www.osvdb.org/1103

Affected products (9)

cpe:2.3:a:cisco:catalyst_12xx_supervisor_software:4.29:*:*:*:*:*:*:*
cpe:2.3:a:cisco:catalyst_29xx_supervisor_software:1.0:*:*:*:*:*:*:*
cpe:2.3:a:cisco:catalyst_29xx_supervisor_software:2.1.5:*:*:*:*:*:*:*
cpe:2.3:a:cisco:catalyst_29xx_supervisor_software:2.1.501:*:*:*:*:*:*:*
cpe:2.3:a:cisco:catalyst_29xx_supervisor_software:2.1.502:*:*:*:*:*:*:*
cpe:2.3:a:cisco:catalyst_5xxx_supervisor_software:1.0:*:*:*:*:*:*:*
cpe:2.3:a:cisco:catalyst_5xxx_supervisor_software:2.1.5:*:*:*:*:*:*:*
cpe:2.3:a:cisco:catalyst_5xxx_supervisor_software:2.1.501:*:*:*:*:*:*:*
cpe:2.3:a:cisco:catalyst_5xxx_supervisor_software:2.1.502:*:*:*:*:*:*:*