CVE-2004-0221: n/a vulnerability

CVE-2004-0221: isakmpd in OpenBSD 3.4 and earlier allows remote attackers to cause a denial of service (crash) via an ISAK...

isakmpd in OpenBSD 3.4 and earlier allows remote attackers to cause a denial of service (crash) via an ISAKMP packet with a delete payload containing a large number of SPIs, which triggers an out-of-bounds read error, as demonstrated by the Striker ISAKMP Protocol Test Suite.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 8, 2024, 00:10 UTC (UTC+00:00)

Security readout for executives and security teams

This is an old OpenBSD isakmpd flaw that can let a remote attacker crash the IPsec key management service. Business impact is availability: legacy VPN or IPsec endpoints may lose negotiation capability until the service is restored. The bundle does not show data theft, code execution, CVSS scoring, or confirmed active exploitation. Exposure is most likely limited to legacy OpenBSD 3.4 or earlier systems running isakmpd and reachable by untrusted networks or VPN peers. Modern supported OpenBSD systems are unlikely to be affected if vendor fixes were applied. Treat as a legacy availability risk. Prioritize if any exposed OpenBSD IPsec gateway remains in production, especially where VPN availability supports critical operations. Otherwise, handle through legacy system retirement and patch assurance. Mitigation focus: Apply the OpenBSD March 17, 2004 reliability fix or upgrade to a supported release.; Restrict isakmpd exposure to trusted VPN peers and management networks.; Disable isakmpd on systems that do not require IPsec/IKE services..

Prepared: Jun 30, 2026, 06:10 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: Mar 25, 2004, 05:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

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0CVSS vectors

0Timeline events

0ADP providers

2Source 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
openbsd-isakmp-delete-dos(15630)CVE reference · vdb-entry, x_refsource_XF

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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