How severe is CVE-2001-0428?

CVE-2001-0428 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2001-0428 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2001-0428?

CVE-2001-0428 primarily affects Cisco Vpn 3000 Concentrator Series Software. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2001-0428?

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

When was CVE-2001-0428 published?

CVE-2001-0428 was published on 2001-07-02 and last updated on 2026-06-16.

CVE-2001-0428

CVE-2001-0428 is a medium-severity vulnerability in Cisco Vpn 3000 Concentrator Series 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% (74th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Cisco Vpn 3000 Concentrator Series Software
Published: 2001-07-02
Last modified: 2026-06-16

Description

Cisco VPN 3000 series concentrators before 2.5.2(F) allow remote attackers to cause a denial of service via an IP packet with an invalid IP option.

Frequently asked questions

What is CVE-2001-0428?: Cisco VPN 3000 series concentrators before 2.5.2(F) allow remote attackers to cause a denial of service via an IP packet with an invalid IP option.
How severe is CVE-2001-0428?: CVE-2001-0428 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2001-0428 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2001-0428?: CVE-2001-0428 primarily affects Cisco Vpn 3000 Concentrator Series Software. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2001-0428?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2001-0428 published?: CVE-2001-0428 was published on 2001-07-02 and last updated on 2026-06-16.

References

Affected products (4)

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:*:*:*:*:*:*:*

More vulnerabilities in Cisco Vpn 3000 Concentrator Series Software

CVE-2006-0483 — High (CVSS 7.8): Cisco VPN 3000 series concentrators running software 4.7.0 through 4.7.2.A allow remote attackers to cause a denial of…
CVE-2005-4499 — High (CVSS 7.5): The Downloadable RADIUS ACLs feature in Cisco PIX and VPN 3000 concentrators, when creating an ACL on the Cisco Secure…
CVE-2003-0258 — High (CVSS 7.5): Cisco VPN 3000 series concentrators and Cisco VPN 3002 Hardware Client 3.5.x through 4.0.REL, when enabling IPSec over…
CVE-2002-1092 — High (CVSS 7.5): Cisco VPN 3000 Concentrator 3.6(Rel) and earlier, and 2.x.x, when configured to use internal authentication with group…
CVE-2002-1098 — High (CVSS 7.5): Cisco VPN 3000 Concentrator 2.2.x, and 3.x before 3.5.3, adds an "HTTPS on Public Inbound (XML-Auto)(forward/in)" rule…
CVE-2002-1096 — High (CVSS 7.5): Cisco VPN 3000 Concentrator 2.2.x, and 3.x before 3.5.1, allows restricted administrators to obtain user passwords that…

All CVEs affecting Cisco Vpn 3000 Concentrator Series Software →