CVE-2009-1099

CVE-2009-1099 is a high-severity vulnerability in Sun Java Runtime Environment with a CVSS 2.0 base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-189.

Key facts

• Severity: High (CVSS 2.0 base score 7.5)
• EPSS exploit prediction: 6% (92nd percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-189
• Affected product: Sun Java Runtime Environment
• Published: 2009-03-25
• Last modified: 2026-06-16

Description

Integer signedness error in Java SE Development Kit (JDK) and Java Runtime Environment (JRE) 5.0 Update 17 and earlier, and 6 Update 12 and earlier, allows remote attackers to access files or execute arbitrary code via crafted glyph descriptions in a Type1 font, which bypasses a signed comparison and triggers a buffer overflow.

Frequently asked questions

What is CVE-2009-1099?

Integer signedness error in Java SE Development Kit (JDK) and Java Runtime Environment (JRE) 5.0 Update 17 and earlier, and 6 Update 12 and earlier, allows remote attackers to access files or execute arbitrary code via crafted glyph descriptions in a Type1 font, which bypasses a signed comparison and triggers a buffer overflow.

How severe is CVE-2009-1099?

CVE-2009-1099 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2009-1099 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-1099?

CVE-2009-1099 primarily affects Sun Java Runtime Environment. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2009-1099?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2009-1099 published?

CVE-2009-1099 was published on 2009-03-25 and last updated on 2026-06-16.

References

• http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?lang=en&cc=us&objectID=c01745133
• http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=777
• http://lists.opensuse.org/opensuse-security-announce/2009-04/msg00001.html
• http://lists.opensuse.org/opensuse-security-announce/2009-05/msg00003.html
• http://lists.opensuse.org/opensuse-security-announce/2009-06/msg00003.html
• http://lists.opensuse.org/opensuse-security-announce/2009-07/msg00001.html
• http://marc.info/?l=bugtraq&m=124344236532162&w=2
• http://secunia.com/advisories/34495
• http://secunia.com/advisories/34496
• http://secunia.com/advisories/35156
• http://secunia.com/advisories/35223
• http://secunia.com/advisories/35255
• http://secunia.com/advisories/35416
• http://secunia.com/advisories/35776
• http://secunia.com/advisories/36185
• http://secunia.com/advisories/37386
• http://secunia.com/advisories/37460
• http://security.gentoo.org/glsa/glsa-200911-02.xml
• http://sunsolve.sun.com/search/document.do?assetkey=1-21-118669-19-1
• http://sunsolve.sun.com/search/document.do?assetkey=1-26-254571-1
• http://support.avaya.com/elmodocs2/security/ASA-2009-108.htm
• http://support.avaya.com/elmodocs2/security/ASA-2009-109.htm
• http://www.oracle.com/technetwork/topics/security/cpujul2009-091332.html
• http://www.redhat.com/support/errata/RHSA-2009-0392.html
• http://www.redhat.com/support/errata/RHSA-2009-0394.html
• http://www.redhat.com/support/errata/RHSA-2009-1038.html
• http://www.securityfocus.com/archive/1/507985/100/0/threaded
• http://www.securityfocus.com/bid/34240
• http://www.securitytracker.com/id?1021913
• http://www.vmware.com/security/advisories/VMSA-2009-0016.html

Affected products (3)

• cpe:2.3:a:sun:java_runtime_environment:5.0:*:17:*:*:*:*:*
• cpe:2.3:a:sun:java_runtime_environment:6.0:*:12:*:*:*:*:*
• cpe:2.3:a:sun:java_se_development_kit:*:*:*:*:*:*:*:*

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Browse all CWE-189 (Numeric Errors) vulnerabilities →