How severe is CVE-2003-0259?

CVE-2003-0259 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2003-0259 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2003-0259?

CVE-2003-0259 primarily affects Cisco Vpn 3002 Hardware Client. In total, 36 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2003-0259?

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

When was CVE-2003-0259 published?

CVE-2003-0259 was published on 2003-05-27 and last updated on 2026-06-16.

CVE-2003-0259

CVE-2003-0259 is a medium-severity vulnerability in Cisco Vpn 3002 Hardware Client 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% (80th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Cisco Vpn 3002 Hardware Client
Published: 2003-05-27
Last modified: 2026-06-16

Description

Cisco VPN 3000 series concentrators and Cisco VPN 3002 Hardware Client 2.x.x through 3.6.7 allows remote attackers to cause a denial of service (reload) via a malformed SSH initialization packet.

Frequently asked questions

What is CVE-2003-0259?: Cisco VPN 3000 series concentrators and Cisco VPN 3002 Hardware Client 2.x.x through 3.6.7 allows remote attackers to cause a denial of service (reload) via a malformed SSH initialization packet.
How severe is CVE-2003-0259?: CVE-2003-0259 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2003-0259 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2003-0259?: CVE-2003-0259 primarily affects Cisco Vpn 3002 Hardware Client. In total, 36 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2003-0259?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2003-0259 published?: CVE-2003-0259 was published on 2003-05-27 and last updated on 2026-06-16.

References

Affected products (36)

cpe:2.3:h:cisco:vpn_3015_concentrator:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:vpn_3030_concentator:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:vpn_3060_concentrator:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:vpn_3080_concentrator:*:*:*:*:*:*:*:*
cpe:2.3:o:cisco:vpn_3000_concentrator_series_software:2.0:*:*:*:*:*:*:*
cpe:2.3:o:cisco:vpn_3000_concentrator_series_software:2.5.2.a:*:*:*:*:*:*:*
cpe:2.3:o:cisco:vpn_3000_concentrator_series_software:2.5.2.b:*:*:*:*:*:*:*
cpe:2.3:o:cisco:vpn_3000_concentrator_series_software:2.5.2.c:*:*:*:*:*:*:*
cpe:2.3:o:cisco:vpn_3000_concentrator_series_software:2.5.2.d:*:*:*:*:*:*:*
cpe:2.3:o:cisco:vpn_3000_concentrator_series_software:2.5.2.f:*:*:*:*:*:*:*
cpe:2.3:o:cisco:vpn_3000_concentrator_series_software:3.0:*:*:*:*:*:*:*
cpe:2.3:o:cisco:vpn_3000_concentrator_series_software:3.0.3.a:*:*:*:*:*:*:*
cpe:2.3:o:cisco:vpn_3000_concentrator_series_software:3.0.3.b:*:*:*:*:*:*:*
cpe:2.3:o:cisco:vpn_3000_concentrator_series_software:3.0.4:*:*:*:*:*:*:*
cpe:2.3:o:cisco:vpn_3000_concentrator_series_software:3.1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:vpn_3000_concentrator_series_software:3.1\(rel\):*:*:*:*:*:*:*
cpe:2.3:o:cisco:vpn_3000_concentrator_series_software:3.1.1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:vpn_3000_concentrator_series_software:3.1.2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:vpn_3000_concentrator_series_software:3.1.4:*:*:*:*:*:*:*
cpe:2.3:o:cisco:vpn_3000_concentrator_series_software:3.5\(rel\):*:*:*:*:*:*:*
cpe:2.3:o:cisco:vpn_3000_concentrator_series_software:3.5.1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:vpn_3000_concentrator_series_software:3.5.2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:vpn_3000_concentrator_series_software:3.5.3:*:*:*:*:*:*:*
cpe:2.3:o:cisco:vpn_3000_concentrator_series_software:3.5.4:*:*:*:*:*:*:*
cpe:2.3:o:cisco:vpn_3000_concentrator_series_software:3.5.5:*:*:*:*:*:*:*
cpe:2.3:o:cisco:vpn_3000_concentrator_series_software:3.6:*:*:*:*:*:*:*
cpe:2.3:o:cisco:vpn_3000_concentrator_series_software:3.6.1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:vpn_3000_concentrator_series_software:3.6.3:*:*:*:*:*:*:*
cpe:2.3:o:cisco:vpn_3000_concentrator_series_software:3.6.5:*:*:*:*:*:*:*
cpe:2.3:o:cisco:vpn_3000_concentrator_series_software:3.6.7:*:*:*:*:*:*:*
cpe:2.3:o:cisco:vpn_3000_concentrator_series_software:3.6.7.a:*:*:*:*:*:*:*
cpe:2.3:o:cisco:vpn_3000_concentrator_series_software:3.6.7.b:*:*:*:*:*:*:*
cpe:2.3:o:cisco:vpn_3000_concentrator_series_software:3.6.7.c:*:*:*:*:*:*:*
cpe:2.3:o:cisco:vpn_3000_concentrator_series_software:3.6.7.d:*:*:*:*:*:*:*
cpe:2.3:o:cisco:vpn_3000_concentrator_series_software:3.6.7d:*:*:*:*:*:*:*
cpe:2.3:a:cisco:vpn_3002_hardware_client:*:*:*:*:*:*:*:*

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