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Vulnerability record · CVE-2002-0853 · published 5 September 2002

CVE-2002-0853: Cisco vpn client vulnerability

Cisco · Vpn Client

Cisco Virtual Private Network (VPN) Client 3.5.4 and earlier allows remote attackers to cause a denial of service (CPU consumption) via a packet with a zero-length payload.

5.0 CVSS 2.0 Medium EPSS 2.2% · top 18.5%
5.0CVSS 2.0 base score
2.2%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
8References
16 Jun 2026Last modified by NVD

Description

Cisco Virtual Private Network (VPN) Client 3.5.4 and earlier allows remote attackers to cause a denial of service (CPU consumption) via a packet with a zero-length payload.

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.iss.net/security_center/static/9821.php
http://www.kb.cert.org/vuls/id/287771 US Government Resource
http://www.securityfocus.com/bid/5440
http://www.cisco.com/warp/public/707/vpnclient-multiple-vuln-pub.shtml PatchVendor Advisory
http://www.iss.net/security_center/static/9821.php
http://www.kb.cert.org/vuls/id/287771 US Government Resource
http://www.securityfocus.com/bid/5440

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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-2002-0853), CISA KEV, FIRST EPSS (scores of 2026-10-03). This page is refreshed as NVD updates the record.