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CVE-2005-3774
Cisco PIX 6.3 and 7.0 allows remote attackers to cause a denial of service (blocked new connections) via spoofed TCP packets that cause…
Medium5.0EPSS 18.2%
- Published
- Updated
- Reserved
- Assigned by
- mitre
Description
Cisco PIX 6.3 and 7.0 allows remote attackers to cause a denial of service (blocked new connections) via spoofed TCP packets that cause the PIX to create embryonic connections that that would not produce a valid connection with the end system, including (1) SYN packets with invalid checksums, which do not result in a RST; or, from an external interface, (2) one byte of "meaningless data," or (3) a TTL that is one less than needed to reach the internal destination.
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)
- 18.2% · top 2.8% of all CVEs (3 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 (16)
- 1015256 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- cisco-pix-ttl-dos(25079) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
- cisco-pix-tcp-data-field-dos(25077) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
- 24140 (opens in a new tab)vdb-entryx_refsource_OSVDBx_transferred
- 15525 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- http://www.cisco.com/en/US/products/hw/vpndevc/ps2030/products_security_notice09186a0080624a37.html (opens in a new tab)x_refsource_CONFIRMx_transferred
- 20051122 Cisco PIX TCP Connection Prevention (opens in a new tab)mailing-listx_refsource_FULLDISCx_transferred
- 20060307 Cisco PIX embryonic state machine 1b data DoS (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- 20051128 Response to Cisco PIX TCP Connection Prevention (opens in a new tab)vendor-advisoryx_refsource_CISCOx_transferred
- 20060307 Cisco PIX embryonic state machine TTL(n-1) DoS (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- VU#853540 (opens in a new tab)third-party-advisoryx_refsource_CERT-VNx_transferred
- 17670 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 20060307 RE: Cisco PIX embryonic state machine 1b data DoS (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- ADV-2005-2546 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
- 20051122 Cisco PIX TCP Connection Prevention (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- 20051122 Cisco PIX TCP Connection Prevention (opens in a new tab)mailing-listx_refsource_FULLDISCx_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-2005-3774)Record last updated .