In GIFLIB before 2019-02-16, a malformed GIF file triggers a divide-by-zero exception in the decoder function DGifSlurp in dgif_lib.c if the height field of the ImageSize data structure is equal to zero.
{
"license": "CC-BY-4.0",
"sources": [
{
"database_specific": {
"status": "Modified"
},
"html_url": "https://nvd.nist.gov/vuln/detail/CVE-2019-15133",
"id": "CVE-2019-15133",
"imported": "2026-07-30T14:38:08.642Z",
"modified": "2026-06-17T02:19:45.980Z",
"published": "2019-08-17T18:15:10.767Z",
"url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2019-15133"
}
]
}