CVE-2002-0852: n/a vulnerability

CVE-2002-0852: Buffer overflows in Cisco Virtual Private Network (VPN) Client 3.5.4 and earlier allows remote attackers to...

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.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 8, 2024, 03:03 UTC (UTC+00:00)

Security readout for executives and security teams

This CVE affects legacy Cisco VPN Client versions 3.5.4 and earlier. A remote attacker could send malformed IKE traffic that crashes the client, causing a denial of service. The supplied sources do not show active exploitation or modern severity scoring. Exposure is limited to environments still running Cisco VPN Client 3.5.4 or earlier, especially on endpoints that can receive IKE traffic from untrusted networks. Most modern environments should confirm whether this obsolete client remains installed. Treat this as a legacy technology risk. It is not supported by provided evidence as actively exploited, but any remaining affected VPN clients should be removed or upgraded because remote crashable VPN software creates avoidable operational risk. Mitigation focus: Inventory systems for Cisco VPN Client 3.5.4 or earlier.; Check Cisco’s advisory for vendor-supported remediation or upgrade guidance.; Retire obsolete Cisco VPN Client deployments where possible..

Prepared: Jul 1, 2026, 06:17 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Aug 14, 2002, 04:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

0Timeline events

0ADP providers

1Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

CWE details

No CWE listed

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