How severe is CVE-2007-4422?

CVE-2007-4422 has a CVSS 2.0 base score of 9.3, rated critical severity.

Is CVE-2007-4422 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2007-4422?

CVE-2007-4422 affects Symantec Enterprise Firewall. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2007-4422?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2007-4422 published?

CVE-2007-4422 was published on 2007-08-18 and last updated on 2026-06-16.

CVE-2007-4422

CVE-2007-4422 is a critical-severity vulnerability in Symantec Enterprise Firewall with a CVSS 2.0 base score of 9.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Critical (CVSS 2.0 base score 9.3)
EPSS exploit prediction: 3% (83rd percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Symantec Enterprise Firewall
Published: 2007-08-18
Last modified: 2026-06-16

Description

The login interface in Symantec Enterprise Firewall 6.x, when a VPN with pre-shared key (PSK) authentication is enabled, generates different responses depending on whether or not a username is valid, which allows remote attackers to enumerate valid usernames.

Frequently asked questions

What is CVE-2007-4422?: The login interface in Symantec Enterprise Firewall 6.x, when a VPN with pre-shared key (PSK) authentication is enabled, generates different responses depending on whether or not a username is valid, which allows remote attackers to enumerate valid usernames.
How severe is CVE-2007-4422?: CVE-2007-4422 has a CVSS 2.0 base score of 9.3, rated critical severity.
Is CVE-2007-4422 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2007-4422?: CVE-2007-4422 affects Symantec Enterprise Firewall. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2007-4422?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2007-4422 published?: CVE-2007-4422 was published on 2007-08-18 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:symantec:enterprise_firewall:6:*:*:*:*:*:*:*

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