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CVE-2009-1095

29
FAUCET Score

CVE-2009-1095 describes an integer overflow vulnerability in the unpack200 component of Java SE Development Kit (JDK) and Java Runtime Environment (JRE) versions 5.0 Update 17 and earlier, and 6 Update 12 and earlier. This critical flaw, with a CVSS score of 10.0, allows unauthenticated remote attackers to achieve arbitrary file access or code execution by providing a specially crafted JAR file containing malicious Pack200 headers. Despite its high severity and potential for complete compromise (C:C/I:C/A:C), there is no evidence of active exploitation, publicly available exploit code, or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.5.0CPE matchmatch criteria
cpe:2.3:a:sun:jdk:*:update17:*:*:*:*:*:*
1.5.0CPE matchmatch criteria
cpe:2.3:a:sun:jdk:1.5.0:*:*:*:*:*:*:*
1.5.0CPE matchmatch criteria
cpe:2.3:a:sun:jdk:1.5.0:update1:*:*:*:*:*:*
1.5.0CPE matchmatch criteria
cpe:2.3:a:sun:jdk:1.5.0:update10:*:*:*:*:*:*
1.5.0CPE matchmatch criteria
cpe:2.3:a:sun:jdk:1.5.0:update11:*:*:*:*:*:*

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
7.10%
Probability of exploitation in next 30 days
EPSS Percentile
93.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0710 is in the 89th percentile among its peer group of 51,553 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

Patch Available

Vendor Patches (11)

redhatpatch availablevia redhat_api
Product: Extras for RHEL 4Fixed in: java-1.6.0-sun-1:1.6.0.13-1jpp.1.el4
View patch
redhatpatch availablevia redhat_api
Product: Extras for RHEL 4Fixed in: java-1.5.0-sun-0:1.5.0.18-1jpp.1.el4
View patch
redhatpatch availablevia redhat_api
Product: Extras for RHEL 4Fixed in: java-1.5.0-ibm-1:1.5.0.9-1jpp.5.el4
View patch
redhatpatch availablevia redhat_api
Product: Extras for RHEL 4Fixed in: java-1.6.0-ibm-1:1.6.0.5-1jpp.1.el4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: java-1.6.0-openjdk-1:1.6.0.0-0.30.b09.el5
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Network Satellite Server v 5.1Fixed in: java-1.5.0-sun-0:1.5.0.22-1jpp.1.el4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Network Satellite Server v 5.3Fixed in: java-1.6.0-ibm-1:1.6.0.7-1jpp.3.el4
View patch
redhatpatch availablevia redhat_api
Product: Supplementary for Red Hat Enterprise Linux 5Fixed in: java-1.6.0-sun-1:1.6.0.13-1jpp.1.el5
View patch
redhatpatch availablevia redhat_api
Product: Supplementary for Red Hat Enterprise Linux 5Fixed in: java-1.5.0-sun-0:1.5.0.18-1jpp.1.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.3.el5
View patch
redhatpatch availablevia redhat_api
Product: Supplementary for Red Hat Enterprise Linux 5Fixed in: java-1.6.0-ibm-1:1.6.0.5-1jpp.1.el5
View patch

Vendor Advisories (1)

redhatCVE-2009-1095Critical

OpenJDK Pack200 Buffer overflow vulnerability (6792554)

Mar 25, 2009

References

h20000.www2.hp.com / bizsupport/TechSupport/Document.jsp
labs.idefense.com / intelligence/vulnerabilities/display.php
lists.opensuse.org / opensuse-security-announce/2009-04/msg00001.html
lists.opensuse.org / opensuse-security-announce/2009-05/msg00003.html
lists.opensuse.org / opensuse-security-announce/2009-06/msg00003.html
lists.opensuse.org / opensuse-security-announce/2009-07/msg00001.html
marc.info
secunia.com / advisories/34489
Vendor Advisory
secunia.com / advisories/34495
Vendor Advisory
secunia.com / advisories/34496
Vendor Advisory
secunia.com / advisories/34632
Vendor Advisory
secunia.com / advisories/34675
Vendor Advisory
secunia.com / advisories/35156
Vendor Advisory
secunia.com / advisories/35223
Vendor Advisory
secunia.com / advisories/35255
Vendor Advisory
secunia.com / advisories/35416
Vendor Advisory
secunia.com / advisories/35776
Vendor Advisory
secunia.com / advisories/36185
secunia.com / advisories/37386
Vendor Advisory
secunia.com / advisories/37460
Vendor Advisory
security.gentoo.org / glsa/glsa-200911-02.xml
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10124
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6643
rhn.redhat.com / errata/RHSA-2009-0377.html
rhn.redhat.com / errata/RHSA-2009-1198.html
sunsolve.sun.com / search/document.do
Patch
sunsolve.sun.com / search/document.do
PatchVendor Advisory
sunsolve.sun.com / search/document.do
support.avaya.com / elmodocs2/security/ASA-2009-108.htm
support.avaya.com / elmodocs2/security/ASA-2009-109.htm
debian.org / security/2009/dsa-1769
mandriva.com / security/advisories
mandriva.com / security/advisories
oracle.com / technetwork/topics/security/cpujul2009-091332.html
redhat.com / support/errata/RHSA-2009-0392.html
redhat.com / support/errata/RHSA-2009-0394.html
redhat.com / support/errata/RHSA-2009-1038.html
securityfocus.com / archive/1/507985/100/0/threaded
securityfocus.com / bid/34240
securitytracker.com / id
ubuntu.com / usn/usn-748-1
vmware.com / security/advisories/VMSA-2009-0016.html
vupen.com / english/advisories/2009/1426
vupen.com / english/advisories/2009/3316