CVE-2026-62292
HighCVSS 8.7Exploitation Probability (EPSS)
Low risk43th percentile - higher than 43% of all known CVEs
Summary
Vulnerability in libheif (versions 1.19.0 to 1.23.1) causing application crash when decoding a crafted uncompressed HEIF image with zlib compression. An offset calculation error leads to out-of-bounds read and crash.
Risk Assessment
An attacker can cause application crash (DoS) by providing a malicious image file, potentially disrupting services.
Recommendation
Update libheif to version 1.23.1 or later, which includes the fix.
Original NVD description (English source)
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.