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CVE-2006-0433
Selective Acknowledgement (SACK) in FreeBSD 5.3 and 5.4 does not properly handle an incoming selective acknowledgement when there is…
Medium5.0EPSS 2.9%
- Published
- Updated
- Reserved
- Assigned by
- freebsd
Description
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).
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Medium5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P |
- EPSS (exploitation in 30 days)
- 2.9% · top 13% of all CVEs (4 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.0.
Weakness
- n/a
Affected products
n/a
- affected n/a
References (7)
- ADV-2006-0409 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
- 22861 (opens in a new tab)vdb-entryx_refsource_OSVDBx_transferred
- 16466 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- 1015566 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- 399 (opens in a new tab)third-party-advisoryx_refsource_SREASONx_transferred
- bsd-sack-handling-dos(24453) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
- 18696 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2006-0433)Record last updated .