$ cve CVE-2005-3774 JSON

CVE-2005-3774 EXPLOIT

5.0

MEDIUM · CVSS 2.0 · EPSS 18.2% (pctl 97)

Patch early

A public exploit exists.

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.

Scoring

CVSS	5.0 (MEDIUM, v2.0)
Vector	AV:N/AC:L/Au:N/C:N/I:N/A:P
EPSS	18.21% — more likely to be exploited than 97% of all CVEs
On CISA KEV	no
Public exploit	yes
Published	2005-11-23
Last modified	2026-06-16

Affected (1)

Vendor	Product
cisco	pix

Public exploits

Source	Title	Date
exploit-db	Cisco PIX - Spoofed TCP SYN Packets Remote Denial of Service	2005-11-23
exploit-db	Cisco PIX - TCP SYN Packet Denial of Service	2005-11-22

References

→ the Explorer · watch your stack · NVD