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CVE-2004-1435

16
FAUCET Score

CVE-2004-1435 describes a denial-of-service vulnerability affecting multiple versions of Cisco ONS 15327, ONS 15454, and ONS 15454 SDH optical networking systems. Remote attackers can exploit this by initiating a high volume of TCP connections that fail to complete the handshake, leading to a control card reset on the affected device. This vulnerability has a CVSS score of 5.0, indicating a medium severity, with a low attack complexity and no authentication required, resulting in partial availability impact. There is no evidence of active exploitation, nor is exploit code publicly available in Metasploit, Nuclei, or ExploitDB, and it has received no community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
1.0CPE matchmatch criteria
cpe:2.3:a:cisco:optical_networking_systems_software:1.0:*:*:*:*:*:*:*
1.1CPE matchmatch criteria
cpe:2.3:a:cisco:optical_networking_systems_software:1.1:*:*:*:*:*:*:*
1.1\(0\)CPE matchmatch criteria
cpe:2.3:a:cisco:optical_networking_systems_software:1.1\(0\):*:*:*:*:*:*:*
1.1\(1\)CPE matchmatch criteria
cpe:2.3:a:cisco:optical_networking_systems_software:1.1\(1\):*:*:*:*:*:*:*
1.3\(0\)CPE matchmatch criteria
cpe:2.3:a:cisco:optical_networking_systems_software:1.3\(0\):*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

AV:N/AC:L/Au:N/C:N/I:N/A:P

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
3.16%
Probability of exploitation in next 30 days
EPSS Percentile
86.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0316 is in the 82nd percentile among its peer group of 23,723 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 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/12117
exchange.xforce.ibmcloud.com / vulnerabilities/16763
cisco.com / warp/public/707/cisco-sa-20040721-ons.shtml
Vendor Advisory
kb.cert.org / vuls/id/277048
Third Party AdvisoryUS Government Resource
securityfocus.com / bid/10768