CVE-2004-0307

Cisco ONS 15327 before 4.1(3), ONS 15454 before 4.6(1), and ONS 15454 SD before 4.1(3) allows remote attackers to cause a denial of service (reset) by not sending the ACK portion of the TCP three-way handshake and sending an invalid response instead.

Published: 2004-11-23 Last update: 2026-04-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2004-0307 is rated Moderate Risk (46.5/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.63%). 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-2004-0307

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 0.76% 1.63% +0.87%
2 2025-03-17 0.65% 0.76% +0.11%
3 2024-12-17 — 0.65% —

Full EPSS history (6 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2004-0307

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/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:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2004-0307

Affected software / configurations for CVE-2004-0307

Vendor Product Version Raw CPE
cisco optical_networking_systems_software 1.0 cpe:2.3:a:cisco:optical_networking_systems_software:1.0:*:*:*:*:*:*:*
cisco optical_networking_systems_software 4.0\(1\) cpe:2.3:a:cisco:optical_networking_systems_software:4.0\(1\):*:*:*:*:*:*:*
cisco optical_networking_systems_software 4.0\(2\) cpe:2.3:a:cisco:optical_networking_systems_software:4.0\(2\):*:*:*:*:*:*:*
cisco optical_networking_systems_software 4.0.0 cpe:2.3:a:cisco:optical_networking_systems_software:4.0.0:*:*:*:*:*:*:*
cisco optical_networking_systems_software 4.1\(0\) cpe:2.3:a:cisco:optical_networking_systems_software:4.1\(0\):*:*:*:*:*:*:*
cisco optical_networking_systems_software 4.1\(1\) cpe:2.3:a:cisco:optical_networking_systems_software:4.1\(1\):*:*:*:*:*:*:*
cisco optical_networking_systems_software 4.1\(2\) cpe:2.3:a:cisco:optical_networking_systems_software:4.1\(2\):*:*:*:*:*:*:*
cisco optical_networking_systems_software 4.1\(3\) cpe:2.3:a:cisco:optical_networking_systems_software:4.1\(3\):*:*:*:*:*:*:*
cisco optical_networking_systems_software 4.1.0 cpe:2.3:a:cisco:optical_networking_systems_software:4.1.0:*:*:*:*:*:*:*
cisco optical_networking_systems_software 4.5 cpe:2.3:a:cisco:optical_networking_systems_software:4.5:*:*:*:*:*:*:*

References for CVE-2004-0307

cvelogic Threat Intelligence