Is CVE-2009-0040 in the CISA KEV catalog?

No. CVE-2009-0040 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2009-0040?

CVE-2009-0040 has a CVSS v2 base score of 6.8 (MEDIUM).

What is the EPSS score for CVE-2009-0040?

CVE-2009-0040 has an EPSS score of 4.83% (91th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2009-0040?

Upgrade iphone os to 3.0 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2009-0040

MEDIUMEPSS 91th pctl

6.8

CVSS v2

NVD

Description

The PNG reference library (aka libpng) before 1.0.43, and 1.2.x before 1.2.35, as used in pngcrush and other applications, allows context-dependent attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted PNG file that triggers a free of an uninitialized pointer in (1) the png_read_png function, (2) pCAL chunk handling, or (3) setup of 16-bit gamma tables.

CWE-824

How to fix

Remediation Available

iphone osNVD

Affected:< 3.0Fixed in:3.0CVE-2009-0040derived from NVD

libpngNVD

Affected:>= 1.2.0, < 1.2.35Fixed in:1.2.35CVE-2009-0040derived from NVD

mac os xNVD

Affected:< 10.5.8Fixed in:10.5.8CVE-2009-0040derived from NVD

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

4.83%probability of exploitation in 30 days

91stpercentile

High risk: more likely to be exploited than 91% of all known CVEs.

References

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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.