Is CVE-2008-3964 in the CISA KEV catalog?

No. CVE-2008-3964 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2008-3964?

CVE-2008-3964 has a CVSS v2 base score of 4.3 (MEDIUM).

What is the EPSS score for CVE-2008-3964?

CVE-2008-3964 has an EPSS score of 3.34% (87th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2008-3964?

Upgrade libpng to 1.2.32 or later.

CVE & CISA-KEV Catalog

CVE-2008-3964

MEDIUMEPSS 87th pctl

4.3

CVSS v2

NVD

Description

Multiple off-by-one errors in libpng before 1.2.32beta01, and 1.4 before 1.4.0beta34, allow context-dependent attackers to cause a denial of service (crash) or have unspecified other impact via a PNG image with crafted zTXt chunks, related to (1) the png_push_read_zTXt function in pngread.c, and possibly related to (2) pngtest.c.

CWE-193

How to fix

Remediation Available

libpngNVD

Affected:< 1.2.32Fixed in:1.2.32CVE-2008-3964derived 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

3.34%probability of exploitation in 30 days

87thpercentile

Elevated risk: more likely to be exploited than 87% of all known CVEs.

References

Patch1

sourceforge.net

Exploit1

sourceforge.net

Third-Party Advisory13

Other references6

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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.