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CVE-2004-0308

26
FAUCET Score

CVE-2004-0308 describes an unknown vulnerability in specific versions of Cisco ONS 15327, ONS 15454, ONS 15454 SD, and ONS15600. This critical flaw allows a superuser with a locked, disabled, or suspended account to bypass security and gain unauthorized access to the VxWorks shell via a Telnet connection. With a CVSS score of 10.0, this vulnerability presents a severe risk due to its network-based attack vector, low attack complexity, and complete compromise of confidentiality, integrity, and availability. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
1.0CPE matchmatch criteria
cpe:2.3:a:cisco:optical_networking_systems_software:1.0:*:*:*:*:*:*:*
4.0\(1\)CPE matchmatch criteria
cpe:2.3:a:cisco:optical_networking_systems_software:4.0\(1\):*:*:*:*:*:*:*
4.0\(2\)CPE matchmatch criteria
cpe:2.3:a:cisco:optical_networking_systems_software:4.0\(2\):*:*:*:*:*:*:*
4.0.0CPE matchmatch criteria
cpe:2.3:a:cisco:optical_networking_systems_software:4.0.0:*:*:*:*:*:*:*
4.1\(0\)CPE matchmatch criteria
cpe:2.3:a:cisco:optical_networking_systems_software:4.1\(0\):*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

10.0HIGH

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

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

Exploit Intelligence

EPSS Score
1.75%
Probability of exploitation in next 30 days
EPSS Percentile
75.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0175 is in the 58th percentile among its peer group of 51,506 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

exchange.xforce.ibmcloud.com / vulnerabilities/15266
cisco.com / warp/public/707/cisco-sa-20040219-ONS.shtml
PatchVendor Advisory
osvdb.org / 4010
securityfocus.com / bid/9699
PatchVendor Advisory