ImageMagick before 7.1.2-15 contains a heap-buffer-overflow read vulnerability in GetPixelIndex caused by OpenPixelCache updating image channel metadata before pixel cache memory allocation. Attackers can trigger memory and disk allocation failures to cause a heap-buffer-overflow read affecting any writer calling GetPixelIndex.
{
"cwe_ids": [
"CWE-125"
],
"cna_assigner": "VulnCheck",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/56xxx/CVE-2026-56362.json",
"unresolved_ranges": [
{
"source": "AFFECTED_FIELD",
"extracted_events": [
{
"fixed": "7.1.2-15"
},
{
"fixed": "6.9.13-40"
}
]
},
{
"source": "CPE_FIELD",
"extracted_events": [
{
"fixed": "7.1.2-15"
},
{
"fixed": "6.9.13-40"
}
]
},
{
"source": "DESCRIPTION",
"extracted_events": [
{
"fixed": "7.1.2-15"
}
]
}
]
}{
"source": "CPE_RANGE",
"cpe": "cpe:2.3:a:imagemagick:imagemagick:*:*:*:*:*:*:*:*",
"extracted_events": [
{
"introduced": "0"
},
{
"fixed": "6.9.13-40"
}
]
}