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CVE-2004-1503

19
FAUCET Score

CVE-2004-1503 describes an integer overflow vulnerability in the InitialDirContext component of Sun Java Runtime Environment (JRE) versions 1.4.2 and 1.5.0. This flaw allows remote attackers to trigger a denial of service by sending a large volume of DNS requests, causing the 'xid' variable to become negative. The vulnerability has a CVSS score of 5.0, indicating a low severity with network-based attacks and low complexity, leading to partial availability impact. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or KEV listing, though it has garnered some community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
1.4.2CPE matchmatch criteria
cpe:2.3:a:sun:jre:1.4.2:*:*:*:*:*:*:*
1.5.0CPE matchmatch criteria
cpe:2.3:a:sun:jre:1.5.0:*:*:*:*:*:*:*

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
2.43%
Probability of exploitation in next 30 days
EPSS Percentile
82.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0243 is in the 74th percentile among its peer group of 23,705 CVEs.

Social Chatter

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

marc.info
secunia.com / advisories/13142
Vendor Advisory
exchange.xforce.ibmcloud.com / vulnerabilities/17990
securityfocus.com / bid/11619