VULNERABILITY INTELLIGENCE
CVE-2015-6818
CVSS score7.5 HIGH
EPSS probability2.41%
CISA KEVNot currently listed
Published2015-09-06
Last modified2026-06-17
CVSS vectorAV:N/AC:L/Au:N/C:P/I:P/A:P
Description
The decode_ihdr_chunk function in libavcodec/pngdec.c in FFmpeg before 2.7.2 does not enforce uniqueness of the IHDR (aka image header) chunk in a PNG image, which allows remote attackers to cause a denial of service (out-of-bounds array access) or possibly have unspecified other impact via a crafted image with two or more of these chunks.