Is CVE-2008-3964 being actively exploited?

CVE-2008-3964 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

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

CVE-2008-3964 has a CVSS 2.0 base score of 4.3 (MEDIUM).

CVE-2008-3964

MEDIUM · CVSS 4.3EPSS 3.3%EU EUVD

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.

Key facts

CVSS score: 4.3 (v2.0)
Severity: MEDIUM
CVSS vector: AV:N/AC:M/Au:N/C:N/I:N/A:P
Weakness (CWE): CWE-193
EPSS score: 3.3% (89th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2008-3949)
Published: September 11, 2008
NVD last modified: June 16, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2008-3949 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.

View on the EU Vulnerability Database

Affected products

libpng / libpng
libpng / libpng
libpng / libpng
libpng / libpng
libpng / libpng
libpng / libpng
libpng / libpng
libpng / libpng
libpng / libpng
libpng / libpng
libpng / libpng
libpng / libpng
libpng / libpng
libpng / libpng
libpng / libpng
libpng / libpng
libpng / libpng
libpng / libpng
libpng / libpng
libpng / libpng
libpng / libpng
libpng / libpng
libpng / libpng
libpng / libpng
libpng / libpng
libpng / libpng
libpng / libpng
libpng / libpng
libpng / libpng
libpng / libpng
libpng / libpng
libpng / libpng
libpng / libpng
libpng / libpng

References

http://secunia.com/advisories/31781(Third Party Advisory)
http://secunia.com/advisories/33137(Third Party Advisory)
http://secunia.com/advisories/35302(Third Party Advisory)
http://secunia.com/advisories/35386(Third Party Advisory)
http://security.gentoo.org/glsa/glsa-200812-15.xml(Third Party Advisory)
http://sourceforge.net/mailarchive/forum.php?thread_name=e56ccc8f0809180317u6a5306fg14683947affb3e1b%40mail.gmail.com&forum_name=png-mng-implement(Third Party Advisory)
http://sourceforge.net/project/shownotes.php?group_id=5624&release_id=624517(Product, Third Party Advisory)
http://sourceforge.net/project/shownotes.php?release_id=624518(Broken Link, Patch)
http://sourceforge.net/tracker/index.php?func=detail&aid=2095669&group_id=5624&atid=105624(Exploit, Third Party Advisory)
http://sunsolve.sun.com/search/document.do?assetkey=1-66-259989-1(Broken Link)
http://sunsolve.sun.com/search/document.do?assetkey=1-77-1020521.1-1(Broken Link)
http://support.avaya.com/elmodocs2/security/ASA-2009-208.htm(Third Party Advisory)
http://www.kb.cert.org/vuls/id/889484(Third Party Advisory, US Government Resource)
http://www.mandriva.com/security/advisories?name=MDVSA-2009:051(Broken Link)
http://www.openwall.com/lists/oss-security/2008/09/09/3(Mailing List, Third Party Advisory)
http://www.openwall.com/lists/oss-security/2008/09/09/8(Mailing List, Third Party Advisory)
http://www.securityfocus.com/bid/31049(Third Party Advisory, VDB Entry)
http://www.vupen.com/english/advisories/2008/2512(Permissions Required)
http://www.vupen.com/english/advisories/2009/1462(Permissions Required)
http://www.vupen.com/english/advisories/2009/1560(Permissions Required)
https://exchange.xforce.ibmcloud.com/vulnerabilities/44928(Third Party Advisory, VDB Entry)

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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