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CVE-2005-3774

30
FAUCET Score

CVE-2005-3774 describes a denial-of-service vulnerability in Cisco PIX versions 6.3 and 7.0, allowing remote attackers to block new connections. This is achieved by sending spoofed TCP packets (e.g., SYN packets with invalid checksums or specific TTL values) that cause the PIX to create unresolvable embryonic connections. The vulnerability has a CVSS score of 5.0, indicating a medium severity with low attack complexity and no authentication required, leading to a partial availability impact. While not actively exploited in the wild (no KEV entry), public exploit code exists on ExploitDB, though there is minimal community discussion or media coverage surrounding this older CVE.

Impacted Technologies

VendorProductVersion(s)CPE
6.3CPE matchmatch criteria
cpe:2.3:h:cisco:pix:6.3:*:*:*:*:*:*:*
7.0CPE matchmatch criteria
cpe:2.3:h:cisco:pix:7.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

AV:N/AC:L/Au:N/C:N/I:N/A:P

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
18.21%
Probability of exploitation in next 30 days
EPSS Percentile
96.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
ExploitDB: EDB-1338 · Nov 23, 2005
This CVE's current EPSS score of 0.1821 is in the 97th percentile among its peer group of 23,690 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

lists.grok.org.uk / pipermail/full-disclosure/2005-November/038971.html
Vendor Advisory
lists.grok.org.uk / pipermail/full-disclosure/2005-November/038983.html
secunia.com / advisories/17670
securitytracker.com / id
exchange.xforce.ibmcloud.com / vulnerabilities/25077
exchange.xforce.ibmcloud.com / vulnerabilities/25079
cisco.com / en/US/products/hw/vpndevc/ps2030/products_security_notice09186a0080624a37.html
cisco.com / warp/public/707/cisco-response-20051122-pix.shtml
kb.cert.org / vuls/id/853540
US Government Resource
osvdb.org / 24140
securityfocus.com / archive/1/417458/30/0/threaded
securityfocus.com / archive/1/426989/100/0/threaded
securityfocus.com / archive/1/426991/100/0/threaded
securityfocus.com / archive/1/427041/100/0/threaded
securityfocus.com / bid/15525
vupen.com / english/advisories/2005/2546