How severe is CVE-2005-3768?

CVE-2005-3768 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2005-3768 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2005-3768?

CVE-2005-3768 primarily affects Symantec Enterprise Firewall. In total, 11 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2005-3768?

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

When was CVE-2005-3768 published?

CVE-2005-3768 was published on 2005-11-23 and last updated on 2026-06-16.

CVE-2005-3768

CVE-2005-3768 is a high-severity vulnerability in Symantec Enterprise Firewall with a CVSS 2.0 base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 2.0 base score 7.5)
EPSS exploit prediction: 4% (89th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Symantec Enterprise Firewall
Published: 2005-11-23
Last modified: 2026-06-16

Description

Buffer overflow in the Internet Key Exchange version 1 (IKEv1) implementation in Symantec Dynamic VPN Services, as used in Enterprise Firewall, Gateway Security, and Firewall /VPN Appliance products, allows remote attackers to cause a denial of service and possibly execute arbitrary code via crafted IKE packets, as demonstrated by the PROTOS ISAKMP Test Suite for IKEv1.

Frequently asked questions

What is CVE-2005-3768?: Buffer overflow in the Internet Key Exchange version 1 (IKEv1) implementation in Symantec Dynamic VPN Services, as used in Enterprise Firewall, Gateway Security, and Firewall /VPN Appliance products, allows remote attackers to cause a denial of service and possibly execute arbitrary code via crafted IKE packets, as demonstrated by the PROTOS ISAKMP Test Suite for IKEv1.
How severe is CVE-2005-3768?: CVE-2005-3768 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2005-3768 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2005-3768?: CVE-2005-3768 primarily affects Symantec Enterprise Firewall. In total, 11 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2005-3768?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2005-3768 published?: CVE-2005-3768 was published on 2005-11-23 and last updated on 2026-06-16.

References

Affected products (11)

cpe:2.3:a:symantec:enterprise_firewall:8.0:*:solaris:*:*:*:*:*
cpe:2.3:a:symantec:enterprise_firewall:8.0:*:windows:*:*:*:*:*
cpe:2.3:h:symantec:firewall_vpn_appliance_100:*:*:*:*:*:*:*:*
cpe:2.3:h:symantec:firewall_vpn_appliance_200:*:*:*:*:*:*:*:*
cpe:2.3:h:symantec:gateway_security_300:2.0:*:*:*:*:*:*:*
cpe:2.3:h:symantec:gateway_security_400:2.0:*:*:*:*:*:*:*
cpe:2.3:h:symantec:gateway_security_5000_series:3.0:*:*:*:*:*:*:*
cpe:2.3:h:symantec:gateway_security_5100:*:*:*:*:*:*:*:*
cpe:2.3:h:symantec:gateway_security_5300:1.0:*:*:*:*:*:*:*
cpe:2.3:h:symantec:gateway_security_5310:1.0:*:*:*:*:*:*:*
cpe:2.3:h:symantec:gateway_security_5400:2.0.1:*:*:*:*:*:*:*

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