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.

Published: 2005-11-22 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2005-3768 is rated Moderate Risk (60.8/100): CVSS High severity, with medium exploitation likelihood (EPSS 3.78%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2005-3768

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 4.00% 3.78% -0.22%
2 2025-03-30 3.08% 4.00% +0.92%
3 2025-03-29 — 3.08% —

Full EPSS history (11 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2005-3768

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 2.0 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 6.4 [email protected]

Weakness enumeration for CVE-2005-3768

Affected software / configurations for CVE-2005-3768

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

References for CVE-2005-3768

cvelogic Threat Intelligence