CVE-2009-1720

CVE-2009-1720 is a high-severity vulnerability in Openexr 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% (93rd percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-189
• Affected product: Openexr
• Published: 2009-07-31
• Last modified: 2026-06-16

Description

Multiple integer overflows in OpenEXR 1.2.2 and 1.6.1 allow context-dependent attackers to cause a denial of service (application crash) or possibly execute arbitrary code via unspecified vectors that trigger heap-based buffer overflows, related to (1) the Imf::PreviewImage::PreviewImage function and (2) compressor constructors. NOTE: some of these details are obtained from third party information.

Frequently asked questions

What is CVE-2009-1720?

Multiple integer overflows in OpenEXR 1.2.2 and 1.6.1 allow context-dependent attackers to cause a denial of service (application crash) or possibly execute arbitrary code via unspecified vectors that trigger heap-based buffer overflows, related to (1) the Imf::PreviewImage::PreviewImage function and (2) compressor constructors. NOTE: some of these details are obtained from third party information.

How severe is CVE-2009-1720?

CVE-2009-1720 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2009-1720 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-1720?

CVE-2009-1720 primarily affects Openexr. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2009-1720?

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-2009-1720 published?

CVE-2009-1720 was published on 2009-07-31 and last updated on 2026-06-16.

References

• http://lists.apple.com/archives/security-announce/2009/Aug/msg00001.html
• http://lists.opensuse.org/opensuse-security-announce/2009-09/msg00000.html
• http://release.debian.org/proposed-updates/stable_diffs/openexr_1.6.1-3%2Blenny3.debdiff
• http://secunia.com/advisories/36030
• http://secunia.com/advisories/36032
• http://secunia.com/advisories/36096
• http://secunia.com/advisories/36123
• http://secunia.com/advisories/36753
• http://security.debian.org/pool/updates/main/o/openexr/openexr_1.2.2-4.3+etch2.diff.gz
• http://security.debian.org/pool/updates/main/o/openexr/openexr_1.6.1-3+lenny3.diff.gz
• http://support.apple.com/kb/HT3757
• http://www.debian.org/security/2009/dsa-1842
• http://www.mandriva.com/security/advisories?name=MDVSA-2009:190
• http://www.mandriva.com/security/advisories?name=MDVSA-2009:191
• http://www.securityfocus.com/bid/35838
• http://www.securitytracker.com/id?1022674
• http://www.ubuntu.com/usn/USN-831-1
• http://www.us-cert.gov/cas/techalerts/TA09-218A.html
• http://www.vupen.com/english/advisories/2009/2035
• http://www.vupen.com/english/advisories/2009/2172
• https://github.com/openexr/openexr/blob/master/CHANGES.md#version-170-july-23-2010
• https://www.redhat.com/archives/fedora-package-announce/2009-July/msg01286.html
• https://www.redhat.com/archives/fedora-package-announce/2009-July/msg01290.html

Affected products (2)

• cpe:2.3:a:openexr:openexr:1.2.2:*:*:*:*:*:*:*
• cpe:2.3:a:openexr:openexr:1.6.1:*:*:*:*:*:*:*

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• CVE-2025-48072 — Critical (CVSS 9.1): OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the…
• CVE-2023-5841 — Critical (CVSS 9.1): Due to a failure in validating the number of scanline samples of a OpenEXR file containing deep scanline data, Academy…
• CVE-2026-41142 — High (CVSS 8.8): OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the…
• CVE-2021-23169 — High (CVSS 8.8): A heap-buffer overflow was found in the copyIntoFrameBuffer function of OpenEXR in versions before 3.0.1. An attacker…

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