CVE-2006-0433

NONECVSS 0.0

0.0

Selective Acknowledgement (SACK) in FreeBSD 5.3 and 5.4 does not properly handle an incoming selective acknowledgement when there is insufficient memory, which might allow remote attackers to cause a denial of service (infinite loop).

CVSS v3: —
EG Score: —
EPSS: 81.8%
KEV: Not listed

Published

February 2, 2006

Last Modified

April 16, 2026

References (16)

secteam@freebsdftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-06:08.sack.asc
secteam@freebsdhttp://secunia.com/advisories/18696
secteam@freebsdhttp://securityreason.com/securityalert/399
secteam@freebsdhttp://securitytracker.com/id?1015566
secteam@freebsdhttp://www.osvdb.org/22861
secteam@freebsdhttp://www.securityfocus.com/bid/16466
secteam@freebsdhttp://www.vupen.com/english/advisories/2006/0409
secteam@freebsdhttps://exchange.xforce.ibmcloud.com/vulnerabilities/24453
af854a3a-2127-422b-91ae-364da2661108ftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-06:08.sack.asc
af854a3a-2127-422b-91ae-364da2661108http://secunia.com/advisories/18696
af854a3a-2127-422b-91ae-364da2661108http://securityreason.com/securityalert/399
af854a3a-2127-422b-91ae-364da2661108http://securitytracker.com/id?1015566
af854a3a-2127-422b-91ae-364da2661108http://www.osvdb.org/22861
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/16466
af854a3a-2127-422b-91ae-364da2661108http://www.vupen.com/english/advisories/2006/0409

Data Freshness Timeline

(refreshed 10× in last 7d / 18× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-29 13:40 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-27 13:37 UTCepss_batch
2026-05-27 13:37 UTCepss_batch
2026-05-26 13:41 UTCepss_batch
2026-05-26 13:41 UTCepss_batch
2026-05-26 07:16 UTCepss_batch
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2026-05-24 16:42 UTCepss_batch
2026-05-22 21:15 UTCepss_batch
2026-05-22 21:15 UTCepss_batch
2026-05-21 22:38 UTCepss_batch
2026-05-20 22:36 UTCepss_batch
2026-05-20 22:36 UTCepss_batch
2026-05-20 11:20 UTCepss_batch
2026-05-20 11:20 UTCepss_batch
2026-05-18 21:29 UTCepss_batch

Frequently asked(4)

What is CVE-2006-0433?

CVE-2006-0433 is a none vulnerability published on February 2, 2006. Selective Acknowledgement (SACK) in FreeBSD 5.3 and 5.4 does not properly handle an incoming selective acknowledgement when there is insufficient memory, which might allow remote attackers to cause a denial of service (infinite loop).

When was CVE-2006-0433 disclosed?

CVE-2006-0433 was first published in the National Vulnerability Database on February 2, 2006, with the most recent update on April 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2006-0433 actively exploited?

CVE-2006-0433 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 81.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

How do I remediate CVE-2006-0433?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2006-0433, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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CVE-2006-0433

📅 Published

🔄 Last Modified

🔗 References (16)