A vulnerability was identified in strukturag libheif up to 1.21.2. This impacts the function Track::load of the file libheif/sequences/track.cc of the component stsz/stts. The manipulation leads to out-of-bounds read. The attack needs to be performed locally. The exploit is publicly available and might be used. Applying a patch is the recommended action to fix this issue. The patch available is inofficial and not approved yet.
{
"cwe_ids": [
"CWE-119",
"CWE-125"
],
"cna_assigner": "VulDB",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/3xxx/CVE-2026-3950.json"
}{
"extracted_events": [
{
"introduced": "1.21.0"
},
{
"last_affected": "1.21.0"
},
{
"introduced": "1.21.1"
},
{
"last_affected": "1.21.1"
},
{
"introduced": "1.21.2"
},
{
"last_affected": "1.21.2"
}
],
"source": "AFFECTED_FIELD"
}