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Vulnerability record · CVE-2002-0852 · published 5 September 2002

CVE-2002-0852: Cisco vpn client vulnerability

Cisco · Vpn Client

Buffer overflows in Cisco Virtual Private Network (VPN) Client 3.5.4 and earlier allows remote attackers to cause a denial of service via (1) an Internet Key Exchange (IKE) with a large Security Parameter Index (SPI) payload, or (2) an IKE packet with a large number of valid payloads.

5.0 CVSS 2.0 Medium EPSS 1.3% · top 30.6%
5.0CVSS 2.0 base score
1.3%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
16 Jun 2026Last modified by NVD

Description

Buffer overflows in Cisco Virtual Private Network (VPN) Client 3.5.4 and earlier allows remote attackers to cause a denial of service via (1) an Internet Key Exchange (IKE) with a large Security Parameter Index (SPI) payload, or (2) an IKE packet with a large number of valid payloads.

AV:N/AC:L/Au:N/C:N/I:N/A:P

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://www.cisco.com/warp/public/707/vpnclient-multiple-vuln-pub.shtml PatchVendor Advisory
http://www.cisco.com/warp/public/707/vpnclient-multiple-vuln-pub.shtml PatchVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2002-0852), CISA KEV, FIRST EPSS (scores of 2026-10-03). This page is refreshed as NVD updates the record.