High 8.8Published Apr 14, 2016

CVE-2015-8540Integer underflow in the png_check_keyword function in pngwutil.c in libpng 0.90 through 0.99, 1.0.x before 1.0.66, 1.1.x and 1.2.x before 1.2.56, 1.3.x and 1.4.x before 1.4.19, and 1.5.x before 1.5.…

Updated under an hour ago (Nov 2, 2026, 12:10 AM ET)

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It affects redhat enterprise_linux_desktop_supplementary and 6 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Integer underflow in the png_check_keyword function in pngwutil.c in libpng 0.90 through 0.99, 1.0.x before 1.0.66, 1.1.x and 1.2.x before 1.2.56, 1.3.x and 1.4.x before 1.4.19, and 1.5.x before 1.5.26 allows remote attackers to have unspecified impact via a space character as a keyword in a PNG image, which triggers an out-of-bounds read.

CVSS: 8.8 HIGH (v3.0, NVD)CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-189
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Not given
NVD analysis: Modified
Record last updated: Jun 16, 2026
First seen by InfoSec Signals: Nov 1, 2026

Affected products

Affected products

redhat enterprise_linux_desktop_supplementary redhat:enterprise_linux_desktop_supplementary	5.0; 6.0	NVD
redhat enterprise_linux_hpc_node redhat:enterprise_linux_hpc_node	6.0	NVD
redhat enterprise_linux_server_supplementary redhat:enterprise_linux_server_supplementary	5.0; 6.0	NVD
redhat enterprise_linux_workstation_supplementary redhat:enterprise_linux_workstation_supplementary	6.0	NVD
libpng libpng libpng:libpng	1.2.0; 1.2.1; 1.2.2; 1.2.3; 1.2.4; 1.2.5; 1.2.6; 1.2.7; and 182 more ranges	NVD
fedoraproject fedora fedoraproject:fedora	23	NVD
debian debian_linux debian:debian_linux	6.0	NVD

References

References

http://lists.fedoraproject.org/pipermail/package-announce/2015-December/174435.html
http://sourceforge.net/p/libpng/bugs/244/
http://sourceforge.net/p/libpng/code/ci/d9006f683c641793252d92254a75ae9b815b42ed/
http://sourceforge.net/projects/libpng/files/libpng10/1.0.66/	patch
http://sourceforge.net/projects/libpng/files/libpng12/1.2.56/	patch
http://sourceforge.net/projects/libpng/files/libpng14/1.4.19/	patch
http://sourceforge.net/projects/libpng/files/libpng15/1.5.26/	patch
http://www.debian.org/security/2016/dsa-3443
http://www.openwall.com/lists/oss-security/2015/12/10/6
http://www.openwall.com/lists/oss-security/2015/12/10/7
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The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.