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CVE-2008-5340

25
FAUCET Score

CVE-2008-5340 is an unspecified vulnerability in Java Web Start and Java Plug-in, affecting various versions of Sun JDK, JRE, and SDK. This flaw allows untrusted JWS applications to gain elevated privileges, enabling unauthorized access to local files or applications. With a CVSS score of 10.0, it represents a critical risk due to its network-based attack vector, low attack complexity, and complete compromise of confidentiality, integrity, and availability. Despite its severity, there is no evidence of active exploitation, public exploit code, or significant community discussion, suggesting it is not currently a prevalent threat.

Impacted Technologies

VendorProductVersion(s)CPE
<= 5.0CPE matchmatch criteria
cpe:2.3:a:sun:jdk:*:update_16:*:*:*:*:*:*
<= 6CPE matchmatch criteria
cpe:2.3:a:sun:jdk:*:update_10:*:*:*:*:*:*
5.0CPE matchmatch criteria
cpe:2.3:a:sun:jdk:5.0:update_1:*:*:*:*:*:*
5.0CPE matchmatch criteria
cpe:2.3:a:sun:jdk:5.0:update_10:*:*:*:*:*:*
5.0CPE matchmatch criteria
cpe:2.3:a:sun:jdk:5.0:update_11:*:*:*:*:*:*

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
3.65%
Probability of exploitation in next 30 days
EPSS Percentile
88.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0365 is in the 79th percentile among its peer group of 51,506 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, 0.1 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

Patch Available

Vendor Patches (11)

redhatpatch availablevia redhat_api
Product: Extras for RHEL 3Fixed in: java-1.4.2-ibm-0:1.4.2.13-1jpp.1.el3
View patch
redhatpatch availablevia redhat_api
Product: Extras for RHEL 4Fixed in: java-1.6.0-sun-1:1.6.0.11-1jpp.1.el4
View patch
redhatpatch availablevia redhat_api
Product: Extras for RHEL 4Fixed in: java-1.5.0-sun-0:1.5.0.17-1jpp.2.el4
View patch
redhatpatch availablevia redhat_api
Product: Extras for RHEL 4Fixed in: java-1.5.0-ibm-1:1.5.0.9-1jpp.4.el4
View patch
redhatpatch availablevia redhat_api
Product: Extras for RHEL 4Fixed in: java-1.6.0-ibm-1:1.6.0.4-1jpp.1.el4
View patch
redhatpatch availablevia redhat_api
Product: Extras for RHEL 4Fixed in: java-1.4.2-ibm-0:1.4.2.13-1jpp.1.el4
View patch
redhatpatch availablevia redhat_api
Product: Supplementary for Red Hat Enterprise Linux 5Fixed in: java-1.6.0-sun-1:1.6.0.11-1jpp.1.el5
View patch
redhatpatch availablevia redhat_api
Product: Supplementary for Red Hat Enterprise Linux 5Fixed in: java-1.5.0-sun-0:1.5.0.17-1jpp.2.el5
View patch
redhatpatch availablevia redhat_api
Product: Supplementary for Red Hat Enterprise Linux 5Fixed in: java-1.5.0-ibm-1:1.5.0.9-1jpp.2.el5
View patch
redhatpatch availablevia redhat_api
Product: Supplementary for Red Hat Enterprise Linux 5Fixed in: java-1.6.0-ibm-1:1.6.0.4-1jpp.1.el5
View patch
redhatpatch availablevia redhat_api
Product: Supplementary for Red Hat Enterprise Linux 5Fixed in: java-1.4.2-ibm-0:1.4.2.13-1jpp.1.el5
View patch

Vendor Advisories (1)

redhatCVE-2008-5340Critical

Java WebStart privilege escalation

Dec 4, 2008

References

lists.apple.com / archives/security-announce/2009/Feb/msg00003.html
lists.opensuse.org / opensuse-security-announce/2009-01/msg00009.html
lists.opensuse.org / opensuse-security-announce/2009-04/msg00004.html
lists.opensuse.org / opensuse-security-announce/2009-05/msg00000.html
marc.info
marc.info
rhn.redhat.com / errata/RHSA-2008-1018.html
rhn.redhat.com / errata/RHSA-2008-1025.html
secunia.com / advisories/32991
secunia.com / advisories/33015
secunia.com / advisories/33710
secunia.com / advisories/34233
secunia.com / advisories/34447
secunia.com / advisories/34605
secunia.com / advisories/34889
secunia.com / advisories/35065
secunia.com / advisories/37386
secunia.com / advisories/38539
security.gentoo.org / glsa/glsa-200911-02.xml
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6627
sunsolve.sun.com / search/document.do
PatchVendor Advisory
support.avaya.com / elmodocs2/security/ASA-2008-486.htm
support.avaya.com / elmodocs2/security/ASA-2009-012.htm
support.nortel.com / go/main.jsp
www116.nortel.com / pub/repository/CLARIFY/DOCUMENT/2009/03/024431-01.pdf
redhat.com / support/errata/RHSA-2009-0016.html
redhat.com / support/errata/RHSA-2009-0369.html
redhat.com / support/errata/RHSA-2009-0445.html
us-cert.gov / cas/techalerts/TA08-340A.html
US Government Resource
vupen.com / english/advisories/2008/3339
vupen.com / english/advisories/2009/0424
vupen.com / english/advisories/2009/0672