gd_interpolation.c in the GD Graphics Library (aka libgd) before 2.1.1, as used in PHP before 5.5.36, 5.6.x before 5.6.22, and 7.x before 7.0.7, allows remote attackers to cause a denial of service (out-of-bounds read) or possibly have unspecified other impact via a crafted image that is mishandled by the imagescale function.
Exploitability
AV:NAC:LPR:NUI:RScope
S:UImpact
C:LI:LA:H7.6/CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H