gifread.c in gif2png, as used in OptiPNG before 0.7.6, allows remote attackers to cause a denial of service (uninitialized memory read) via a crafted GIF file.
https://sourceforge.net/p/optipng/bugs/53/
http://www.ubuntu.com/usn/USN-2951-1
http://optipng.sourceforge.net/history.txt
Source: Mitre, NVD
Published: 2016-04-20
Updated: 2018-10-30
Base Score: 4.3
Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:N/A:P
Severity: Medium
Base Score: 5.5
Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H