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CVE-2005-2359
The AES-XCBC-MAC algorithm in IPsec in FreeBSD 5.3 and 5.4, when used for authentication without other encryption, uses a constant key…
Medium5.0EPSS 0.91%
- Published
- Updated
- Reserved
- Assigned by
- freebsd
Description
The AES-XCBC-MAC algorithm in IPsec in FreeBSD 5.3 and 5.4, when used for authentication without other encryption, uses a constant key instead of the one that was assigned by the system administrator, which can allow remote attackers to spoof packets to establish an IPsec session.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Medium5.0 | AV:N/AC:L/Au:N/C:N/I:P/A:N |
- EPSS (exploitation in 30 days)
- 0.91% · top 40% 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 (4)
- 16244 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- freebsd-aesxcbcmac-security-bypass(21551) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
- 14394 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- 1014586 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_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-2005-2359)Record last updated .