{"apiVersion":"1.0","identifier":"CVE-2026-62292","description":"libheif is a HEIF and AVIF file format decoder and encoder. From 1.19.0 until 1.23.1, a crafted uncompressed HEIF image using generic zlib unci full-item compression can crash an application that decodes an advertised tile with heif_image_handle_decode_image_tile(). In libheif/codecs/uncompressed/unc_decoder.cc, unc_decoder::fetch_tile_data() computes a large tile offset and unc_decoder::get_compressed_image_data_uncompressed() validates it with range_start_offset plus range_size. For the last advertised tile (4095, 4095), the addition can wrap to zero, bypass the bounds check, and pass an invalid source pointer and a one-terabyte length to memcpy. The observed result is an out-of-bounds read and process crash; opening the file alone does not trigger the issue because tile decoding is required. This issue is fixed in version 1.23.1.","publishedAt":"2026-08-18T22:17:03","lastModifiedAt":"2026-08-25T02:16:43","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-62292","cvssScore":8.7,"cvssVector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","epssProbability":0.0045,"riskScore":0.91,"affectedProduct":"libheif","affectedVersions":">=1.19.0,<1.23.1","vulnerabilityType":"Library","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-62292","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-62292","en":"https://www.redsauce.net/en/cves/CVE-2026-62292","fr":"https://www.redsauce.net/fr/cves/CVE-2026-62292","pt":"https://www.redsauce.net/pt/cves/CVE-2026-62292","de":"https://www.redsauce.net/de/cves/CVE-2026-62292","sk":"https://www.redsauce.net/sk/cves/CVE-2026-62292","el":"https://www.redsauce.net/el/cves/CVE-2026-62292"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-62292"}}