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CVE-2006-0747

Integer underflow in Freetype before 2.2 allows remote attackers to cause a denial of service ...

5.0 MediumPublic exploitFix available

Integer underflow in Freetype before 2.2 allows remote attackers to cause a denial of service (crash) via a font file with an odd number of blue values, which causes the underflow when decrementing by 2 in a context that assumes an even number of values.

Exploit likelihood

12.7%Up 0.1 points since Feb 4, 2022
90%50%10%1%

What each source reports

NVD Score used 5.0

Integer underflow in Freetype before 2.2 allows remote attackers to cause a denial of service (crash) via a font file with an odd number of blue values, which causes the underflow when decrementing by 2 in a context that assumes an even number of values.

Record
CVE-2006-0747
CVSS 2.0
5.0 MediumAV:N/AC:L/Au:N/C:N/I:N/A:P
Weakness
CWE-189
Updated
2026-11-02
CVE List No score

Integer underflow in Freetype before 2.2 allows remote attackers to cause a denial of service (crash) via a font file with an odd number of blue values, which causes the underflow when decrementing by 2 in a context that assumes an even number of values.

Record
CVE-2006-0747
Updated
2026-11-02
EUVDEUVD-2006-0753 No score

Integer underflow in Freetype before 2.2 allows remote attackers to cause a denial of service (crash) via a font file with an odd number of blue values, which causes the underflow when decrementing by 2 in a context that assumes an even number of values.

Record
EUVD-2006-0753
Updated
2026-11-03
GitHub AdvisoriesGHSA-pgxv-x8c2-8f48 No score

Integer underflow in Freetype before 2.2 allows remote attackers to cause a denial of service ...

Integer underflow in Freetype before 2.2 allows remote attackers to cause a denial of service (crash) via a font file with an odd number of blue values, which causes the underflow when decrementing by 2 in a context that assumes an even number of values.

Record
GHSA-pgxv-x8c2-8f48
Updated
2026-11-02
OSV No score

Integer underflow in Freetype before 2.2 allows remote attackers to cause a denial of service (crash) via a font file with an odd number of blue values, which causes the underflow when decrementing by 2 in a context that assumes an even number of values.

Record
CVE-2006-0747
Updated
2026-11-02
OSVDEBIAN-CVE-2006-0747 No score

Integer underflow in Freetype before 2.2 allows remote attackers to cause a denial of service (crash) via a font file with an odd number of blue values, which causes the underflow when decrementing by 2 in a context that assumes an even number of values.

Record
DEBIAN-CVE-2006-0747
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
freetype
Debian:12
 before 2.2.1-1
2.2.1-1
freetype
Debian:13
 before 2.2.1-1
2.2.1-1
freetype
Debian:14
 before 2.2.1-1
2.2.1-1
freetype
Debian:3.0
From an advisory covering 3 CVEs
 before 2.0.9-1woody1, plus listed versions
2.0.9-1
2.0.9-1woody1
freetype
Debian:3.1
From an advisory covering 3 CVEs
 before 2.1.7-2.5, plus listed versions
2.1.7-2.4
2.1.7-2.5
freetype
Red Hat:enterprise_linux:3::as
From an advisory covering 4 CVEs
 before 0:2.1.4-4.0.rhel3.2
0:2.1.4-4.0.rhel3.2
freetype-debuginfo
Red Hat:enterprise_linux:3::as
From an advisory covering 4 CVEs
 before 0:2.1.4-4.0.rhel3.2
0:2.1.4-4.0.rhel3.2
freetype-devel
Red Hat:enterprise_linux:3::as
From an advisory covering 4 CVEs
 before 0:2.1.4-4.0.rhel3.2
0:2.1.4-4.0.rhel3.2
freetype
Red Hat:enterprise_linux:3::desktop
From an advisory covering 4 CVEs
 before 0:2.1.4-4.0.rhel3.2
0:2.1.4-4.0.rhel3.2
freetype-debuginfo
Red Hat:enterprise_linux:3::desktop
From an advisory covering 4 CVEs
 before 0:2.1.4-4.0.rhel3.2
0:2.1.4-4.0.rhel3.2
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Affected packages
PackageAffectedFixed
freetype-devel
Red Hat:enterprise_linux:3::desktop
From an advisory covering 4 CVEs
 before 0:2.1.4-4.0.rhel3.2
0:2.1.4-4.0.rhel3.2
freetype
Red Hat:enterprise_linux:3::es
From an advisory covering 4 CVEs
 before 0:2.1.4-4.0.rhel3.2
0:2.1.4-4.0.rhel3.2
freetype-debuginfo
Red Hat:enterprise_linux:3::es
From an advisory covering 4 CVEs
 before 0:2.1.4-4.0.rhel3.2
0:2.1.4-4.0.rhel3.2
freetype-devel
Red Hat:enterprise_linux:3::es
From an advisory covering 4 CVEs
 before 0:2.1.4-4.0.rhel3.2
0:2.1.4-4.0.rhel3.2
freetype
Red Hat:enterprise_linux:3::ws
From an advisory covering 4 CVEs
 before 0:2.1.4-4.0.rhel3.2
0:2.1.4-4.0.rhel3.2
freetype-debuginfo
Red Hat:enterprise_linux:3::ws
From an advisory covering 4 CVEs
 before 0:2.1.4-4.0.rhel3.2
0:2.1.4-4.0.rhel3.2
freetype-devel
Red Hat:enterprise_linux:3::ws
From an advisory covering 4 CVEs
 before 0:2.1.4-4.0.rhel3.2
0:2.1.4-4.0.rhel3.2
freetype
Red Hat:enterprise_linux:4::as
From an advisory covering 4 CVEs
 before 0:2.1.9-1.rhel4.4
0:2.1.9-1.rhel4.4
freetype-debuginfo
Red Hat:enterprise_linux:4::as
From an advisory covering 4 CVEs
 before 0:2.1.9-1.rhel4.4
0:2.1.9-1.rhel4.4
freetype-demos
Red Hat:enterprise_linux:4::as
From an advisory covering 4 CVEs
 before 0:2.1.9-1.rhel4.4
0:2.1.9-1.rhel4.4
freetype-devel
Red Hat:enterprise_linux:4::as
From an advisory covering 4 CVEs
 before 0:2.1.9-1.rhel4.4
0:2.1.9-1.rhel4.4
freetype-utils
Red Hat:enterprise_linux:4::as
From an advisory covering 4 CVEs
 before 0:2.1.9-1.rhel4.4
0:2.1.9-1.rhel4.4
freetype
Red Hat:enterprise_linux:4::desktop
From an advisory covering 4 CVEs
 before 0:2.1.9-1.rhel4.4
0:2.1.9-1.rhel4.4
freetype-debuginfo
Red Hat:enterprise_linux:4::desktop
From an advisory covering 4 CVEs
 before 0:2.1.9-1.rhel4.4
0:2.1.9-1.rhel4.4
freetype-demos
Red Hat:enterprise_linux:4::desktop
From an advisory covering 4 CVEs
 before 0:2.1.9-1.rhel4.4
0:2.1.9-1.rhel4.4
freetype-devel
Red Hat:enterprise_linux:4::desktop
From an advisory covering 4 CVEs
 before 0:2.1.9-1.rhel4.4
0:2.1.9-1.rhel4.4
freetype-utils
Red Hat:enterprise_linux:4::desktop
From an advisory covering 4 CVEs
 before 0:2.1.9-1.rhel4.4
0:2.1.9-1.rhel4.4
freetype
Red Hat:enterprise_linux:4::es
From an advisory covering 4 CVEs
 before 0:2.1.9-1.rhel4.4
0:2.1.9-1.rhel4.4
freetype-debuginfo
Red Hat:enterprise_linux:4::es
From an advisory covering 4 CVEs
 before 0:2.1.9-1.rhel4.4
0:2.1.9-1.rhel4.4
freetype-demos
Red Hat:enterprise_linux:4::es
From an advisory covering 4 CVEs
 before 0:2.1.9-1.rhel4.4
0:2.1.9-1.rhel4.4
freetype-devel
Red Hat:enterprise_linux:4::es
From an advisory covering 4 CVEs
 before 0:2.1.9-1.rhel4.4
0:2.1.9-1.rhel4.4
freetype-utils
Red Hat:enterprise_linux:4::es
From an advisory covering 4 CVEs
 before 0:2.1.9-1.rhel4.4
0:2.1.9-1.rhel4.4
freetype
Red Hat:enterprise_linux:4::ws
From an advisory covering 4 CVEs
 before 0:2.1.9-1.rhel4.4
0:2.1.9-1.rhel4.4
freetype-debuginfo
Red Hat:enterprise_linux:4::ws
From an advisory covering 4 CVEs
 before 0:2.1.9-1.rhel4.4
0:2.1.9-1.rhel4.4
freetype-demos
Red Hat:enterprise_linux:4::ws
From an advisory covering 4 CVEs
 before 0:2.1.9-1.rhel4.4
0:2.1.9-1.rhel4.4
freetype-devel
Red Hat:enterprise_linux:4::ws
From an advisory covering 4 CVEs
 before 0:2.1.9-1.rhel4.4
0:2.1.9-1.rhel4.4
freetype-utils
Red Hat:enterprise_linux:4::ws
From an advisory covering 4 CVEs
 before 0:2.1.9-1.rhel4.4
0:2.1.9-1.rhel4.4

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
SourceLinkDate
Exploit-DBFreeType - '.TTF' File Remote Buffer Overflow2006-06-08

History

History
RecordedChangedSources
affected, facts
aliasesEUVD
first indexedCVE List, Exploit-DB, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2006-0747 is a medium vulnerability (CVSS 5.0) in Freetype, published May 23, 2006. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 12.7%, the 96th percentile. Fixed in freetype 2.2.1-1.

References

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