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CVE-2005-4197

33
FAUCET Score

CVE-2005-4197 describes a critical vulnerability in Nortel SSL VPN version 4.2.1.6, where remote attackers can execute arbitrary commands. This is achieved by injecting malicious links into the 'a' parameter of tunnelform.yaws, which are then executed with elevated privileges by a cryptographically signed Java Applet. With a CVSS score of 7.5, this vulnerability is highly severe, requiring no authentication and allowing for partial compromise of confidentiality, integrity, and availability. While no active exploitation or Metasploit modules are reported, an ExploitDB entry exists, and the vulnerability has received minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 4.2.1.6CPE matchmatch criteria
cpe:2.3:a:nortel:ssl_vpn:*:*:*:*:*:*:*:*
4.1.2.11CPE matchmatch criteria
cpe:2.3:a:nortel:ssl_vpn:4.1.2.11:*:*:*:*:*:*:*
4.1.2.12CPE matchmatch criteria
cpe:2.3:a:nortel:ssl_vpn:4.1.2.12:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.5HIGH

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

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
11.85%
Probability of exploitation in next 30 days
EPSS Percentile
95.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
ExploitDB: EDB-26771 · Dec 8, 2005
This CVE's current EPSS score of 0.1185 is in the 93rd percentile among its peer group of 51,485 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, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

secunia.com / advisories/17974
Vendor Advisory
securitytracker.com / id
sec-consult.com / 247.html
Exploit
securityfocus.com / archive/1/419263/100/0/threaded
securityfocus.com / bid/15798
Exploit
vupen.com / english/advisories/2005/2845