Is CVE-2009-1721 in the CISA KEV catalog?

No. CVE-2009-1721 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2009-1721?

CVE-2009-1721 has a CVSS v2 base score of 6.8 (MEDIUM).

What is the EPSS score for CVE-2009-1721?

CVE-2009-1721 has an EPSS score of 4.29% (90th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2009-1721?

Upgrade openexr on debian 11 to 1.6.1-4.1 or later.

CVE & CISA-KEV Catalog

CVE-2009-1721

MEDIUMEPSS 90th pctl

6.8

CVSS v2

NVD

Description

The decompression implementation in the Imf::hufUncompress function in OpenEXR 1.2.2 and 1.6.1 allows context-dependent attackers to cause a denial of service (application crash) or possibly execute arbitrary code via vectors that trigger a free of an uninitialized pointer.

CWE-824

How to fix

Remediation Available

openexrDebian

Fixed in:1.6.1-4.1CVE-2009-1721

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

4.29%probability of exploitation in 30 days

90thpercentile

High risk: more likely to be exploited than 90% of all known CVEs.

References

Patch4

Vendor Advisory3

Third-Party Advisory4

Mailing List5

Other references6

Related Vulnerabilities

Other CWE-824 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2018-9948	Medium	6.5	64%	-	-
CVE-2018-11803	High	7.5	58%	-	Fix
CVE-2022-21971	High	7.8	54%	KEV	Fix
CVE-2010-1818	High	9.3	43%	-	-
CVE-2015-1770	High	8.8	35%	KEV	-
CVE-2017-12561	Critical	9.8	31%	-	-

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-23.