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CVE-2003-1301

19
FAUCET Score

CVE-2003-1301 describes a denial-of-service vulnerability affecting Sun Java Runtime Environment (JRE) versions 1.x before 1.4.2_11 and 1.5.x before 1.5.0_06, as well as web browsers utilizing these JRE versions. Remote attackers can trigger an application crash by providing deeply nested object arrays, which cause improper garbage collection and invalid memory access. This vulnerability has a CVSS score of 5.0, indicating a medium severity, and allows for a low-complexity attack over the network with no authentication required, resulting in a partial availability impact. While there is no evidence of active exploitation, nor publicly available exploit code in Metasploit or ExploitDB, the vulnerability has garnered significant community discussion, with 10 mentions, suggesting awareness among security researchers.

Impacted Technologies

VendorProductVersion(s)CPE
1.4.2CPE matchmatch criteria
cpe:2.3:a:sun:jre:1.4.2:*:*:*:*:*:*:*
1.4.2_1CPE matchmatch criteria
cpe:2.3:a:sun:jre:1.4.2_1:*:*:*:*:*:*:*
1.4.2_2CPE matchmatch criteria
cpe:2.3:a:sun:jre:1.4.2_2:*:*:*:*:*:*:*
1.4.2_3CPE matchmatch criteria
cpe:2.3:a:sun:jre:1.4.2_3:*:*:*:*:*:*:*
1.4.2_4CPE matchmatch criteria
cpe:2.3:a:sun:jre:1.4.2_4:*:*:*:*:*:*:*

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
2.52%
Probability of exploitation in next 30 days
EPSS Percentile
83.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0252 is in the 75th 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

bugs.sun.com / bugdatabase/view_bug.do
bugs.sun.com / bugdatabase/view_bug.do
illegalaccess.org / exploit/ObjectStackOverflow.html
Exploit
securityfocus.com / archive/1/434705/100/0/threaded
securityfocus.com / bid/18058