CVE-2003-1230: n/a vulnerability

CVE-2003-1230: The implementation of SYN cookies (syncookies) in FreeBSD 4.5 through 5.0-RELEASE-p3 uses only 32-bit inter...

The implementation of SYN cookies (syncookies) in FreeBSD 4.5 through 5.0-RELEASE-p3 uses only 32-bit internal keys when generating syncookies, which makes it easier for remote attackers to conduct brute force ISN guessing attacks and spoof legitimate traffic.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 8, 2024, 02:19 UTC (UTC+00:00)

Security readout for executives and security teams

Older FreeBSD systems generated SYN cookies with only 32 bits of secret key material. That weakness could make it easier for a remote attacker to guess TCP sequence information and impersonate legitimate traffic. The bundle does not show current exploitation or a CVSS score. Exposure is likely limited to legacy FreeBSD 4.5 through 5.0-RELEASE-p3 systems with syncookies in use. Modern systems are unlikely to be affected unless obsolete FreeBSD hosts remain in production, lab, appliance, or embedded environments. Treat this as a legacy-platform risk. It is not currently evidenced as actively exploited, but affected systems are obsolete and should be removed or remediated as part of exposure reduction. Mitigation focus: Identify and retire or upgrade affected FreeBSD releases.; Review FreeBSD-SA-03:03 for vendor-approved patches or fixed versions.; Check vendor guidance before changing syncookie behavior..

Prepared: Jun 29, 2026, 18:28 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

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

cve · low confidence lookup

CVE-2003-1230 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

Open ATT&CK lookup

Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Aug 17, 2005, 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

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
freebsd-syncookie-brute-force(11397)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

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.