CVE-2009-2416

CVE-2009-2416 is a medium-severity vulnerability in Redhat Enterprise Linux with a CVSS 3.x base score of 6.5. 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-416.

Key facts

• Severity: Medium (CVSS 3.x base score 6.5)
• CVSS v2: 4.3
• EPSS exploit prediction: 2% (76th percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-416
• Affected product: Redhat Enterprise Linux
• Published: 2009-08-11
• Last modified: 2026-06-16

Description

Multiple use-after-free vulnerabilities in libxml2 2.5.10, 2.6.16, 2.6.26, 2.6.27, and 2.6.32, and libxml 1.8.17, allow context-dependent attackers to cause a denial of service (application crash) via crafted (1) Notation or (2) Enumeration attribute types in an XML file, as demonstrated by the Codenomicon XML fuzzing framework.

Frequently asked questions

What is CVE-2009-2416?

Multiple use-after-free vulnerabilities in libxml2 2.5.10, 2.6.16, 2.6.26, 2.6.27, and 2.6.32, and libxml 1.8.17, allow context-dependent attackers to cause a denial of service (application crash) via crafted (1) Notation or (2) Enumeration attribute types in an XML file, as demonstrated by the Codenomicon XML fuzzing framework.

How severe is CVE-2009-2416?

CVE-2009-2416 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2009-2416 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-2416?

CVE-2009-2416 primarily affects Redhat Enterprise Linux. In total, 33 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2009-2416?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2009-2416 published?

CVE-2009-2416 was published on 2009-08-11 and last updated on 2026-06-16.

References

• http://googlechromereleases.blogspot.com/2009/08/stable-update-security-fixes.html
• http://lists.apple.com/archives/security-announce/2009/Nov/msg00000.html
• http://lists.apple.com/archives/security-announce/2009/Nov/msg00001.html
• http://lists.apple.com/archives/security-announce/2010/Jun/msg00003.html
• http://lists.opensuse.org/opensuse-security-announce/2009-09/msg00001.html
• http://secunia.com/advisories/35036
• http://secunia.com/advisories/36207
• http://secunia.com/advisories/36338
• http://secunia.com/advisories/36417
• http://secunia.com/advisories/36631
• http://secunia.com/advisories/37346
• http://secunia.com/advisories/37471
• http://support.apple.com/kb/HT3937
• http://support.apple.com/kb/HT3949
• http://support.apple.com/kb/HT4225
• http://www.cert.fi/en/reports/2009/vulnerability2009085.html
• http://www.codenomicon.com/labs/xml/
• http://www.debian.org/security/2009/dsa-1859
• http://www.mail-archive.com/debian-bugs-dist%40lists.debian.org/msg678527.html
• http://www.networkworld.com/columnists/2009/080509-xml-flaw.html
• http://www.openoffice.org/security/cves/CVE-2009-2414-2416.html
• http://www.securityfocus.com/archive/1/507985/100/0/threaded
• http://www.securityfocus.com/bid/36010
• http://www.ubuntu.com/usn/USN-815-1
• http://www.vmware.com/security/advisories/VMSA-2009-0016.html
• http://www.vupen.com/english/advisories/2009/2420
• http://www.vupen.com/english/advisories/2009/3184
• http://www.vupen.com/english/advisories/2009/3217
• http://www.vupen.com/english/advisories/2009/3316
• https://bugzilla.redhat.com/show_bug.cgi?id=515205

Affected products (33)

• cpe:2.3:a:xmlsoft:libxml:1.8.17:*:*:*:*:*:*:*
• cpe:2.3:a:xmlsoft:libxml2:2.5.10:*:*:*:*:*:*:*
• cpe:2.3:a:xmlsoft:libxml2:2.6.16:*:*:*:*:*:*:*
• cpe:2.3:a:xmlsoft:libxml2:2.6.26:*:*:*:*:*:*:*
• cpe:2.3:a:xmlsoft:libxml2:2.6.27:*:*:*:*:*:*:*
• cpe:2.3:a:xmlsoft:libxml2:2.6.32:*:*:*:*:*:*:*
• cpe:2.3:o:fedoraproject:fedora:10:*:*:*:*:*:*:*
• cpe:2.3:o:fedoraproject:fedora:11:*:*:*:*:*:*:*
• cpe:2.3:o:debian:debian_linux:4.0:*:*:*:*:*:*:*
• cpe:2.3:o:redhat:enterprise_linux:3.0:*:*:*:*:*:*:*
• cpe:2.3:o:redhat:enterprise_linux:4.0:*:*:*:*:*:*:*
• cpe:2.3:o:redhat:enterprise_linux:5.0:*:*:*:*:*:*:*
• cpe:2.3:o:canonical:ubuntu_linux:6.06:*:*:*:*:*:*:*
• cpe:2.3:o:canonical:ubuntu_linux:8.04:*:*:*:-:*:*:*
• cpe:2.3:o:canonical:ubuntu_linux:8.10:*:*:*:*:*:*:*
• cpe:2.3:o:canonical:ubuntu_linux:9.04:*:*:*:*:*:*:*
• cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*
• cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:*
• cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
• cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*
• cpe:2.3:o:apple:mac_os_x_server:*:*:*:*:*:*:*:*
• cpe:2.3:o:opensuse:opensuse:*:*:*:*:*:*:*:*
• cpe:2.3:o:suse:linux_enterprise:10.0:-:*:*:*:*:*:*
• cpe:2.3:o:suse:linux_enterprise:11.0:-:*:*:*:*:*:*
• cpe:2.3:o:suse:linux_enterprise_server:9:*:*:*:*:*:*:*
• cpe:2.3:a:vmware:vcenter_server:4.0:-:*:*:*:*:*:*
• cpe:2.3:a:vmware:vma:4.0:*:*:*:*:*:*:*
• cpe:2.3:o:vmware:esx:3.0.3:*:*:*:*:*:*:*
• cpe:2.3:o:vmware:esx:3.5:*:*:*:*:*:*:*
• cpe:2.3:o:vmware:esx:4.0:*:*:*:*:*:*:*
• cpe:2.3:o:vmware:esxi:3.5:*:*:*:*:*:*:*
• cpe:2.3:o:vmware:esxi:4.0:*:*:*:*:*:*:*
• cpe:2.3:a:sun:openoffice.org:*:*:*:*:*:*:*:*

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