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CVE-2007-4422

23
FAUCET Score

CVE-2007-4422 describes a username enumeration vulnerability in Symantec Enterprise Firewall 6.x when VPN with pre-shared key authentication is enabled. This flaw allows remote attackers to determine valid usernames by observing differing responses from the login interface. With a CVSS score of 9.3, this vulnerability is considered critical due to its network-based attack vector, medium complexity, and complete compromise of confidentiality, integrity, and availability. While there is no evidence of active exploitation, nor publicly available exploit code in Metasploit or ExploitDB, the vulnerability has garnered some community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
6CPE matchmatch criteria
cpe:2.3:a:symantec:enterprise_firewall:6:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

9.3HIGH

AV:N/AC:M/Au:N/C:C/I:C/A:C

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.58%
Probability of exploitation in next 30 days
EPSS Percentile
83.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0258 is in the 41st percentile among its peer group of 8,920 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 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/26511
exchange.xforce.ibmcloud.com / vulnerabilities/36081
osvdb.org / 36489
securityfocus.com / bid/25338
securitytracker.com / id
symantec.com / avcenter/security/Content/2007.08.16.html
Vendor Advisory
vupen.com / english/advisories/2007/2909