CVE-2025-43967

CVE-2025-43967 involves a NULL pointer dereference in libheif

CVE-2026-41071

CVE-2026-41071 affects libheif up to version 1.21.2. A crafted HEIF sequence file where the saiz box declares more samples than actually exist can trigger a heap‑buffer‑overflow (out‑of‑bounds read) in the SampleAuxInfoReader constructor when parsing via heif_context_read_from_file. The reader it...

CVE-2025-43966

CVE-2025-43966 affects libheif prior to 1.19.6, with a NULL pointer dereference in ImageItem_iden (iden.cc). Root cause: dereference of a null item reference leading to potential crash. Impact: availability may be reduced (per CVSS in public entry). Remediation: upgrade libheif to version 1.19.6 ...

CVE-2026-32740

libheif (HEIF/AVIF decoder/encoder) versions

CVE-2026-41069

Summary: CVE-2026-41069 affects libheif up to v1.21.2, where a malformed HEIF sequence can trigger an out-of-bounds read in core sequence parsing, leading to DoS. The issue occurs when stco.entry_count == 0 but saiz.sample_count > 0, causing the SampleAuxInfoReader loop to dereference an empty...

CVE-2025-68431

CVE-2025-68431 affects libheif prior to version 1.21.0, where a crafted HEIF exploiting the overlay image item path triggers a heap buffer over-read in HeifPixelImage::overlay() . The root cause is a negative row length (likely from an unclipped overlay rectangle or invalid offsets) that underflo...

CVE-2026-49271

CVE-2026-49271 affects libheif prior to 1.22.1. The uncompressed HEIF decoder validates icef compressed-unit offsets with unit_offset + unit_size, which can wrap and allow constructing iterators outside the compressed item buffer, causing an out-of-bounds heap read and crash. This vulnerability i...

CVE-2026-47709

libheif (HEIF/AVIF decoder/encoder) has a null pointer dereference in heif_image_handle_get_image_tiling for malformed uncompressed image items with uncC but no ispe. In debug builds this triggers an ispe && uncC assertion; in release/ASan builds it can cause a null read at address 0xa8. Affected...

CVE-2026-47247

Libheif vulnerability CVE-2026-47247: Prior to 1.22.0, two bugs in the libheif decoding path can leak heap memory as visible pixel data in grid images. An attacker uploading a crafted AVIF/HEIC to server-side image processors (e.g., WordPress, Sharp/libvips, ImageMagick) can recover heap data fro...

CVE-2026-32738

libheif (versions

CVE-2026-47714

The issue is a concrete, exploitable flaw in libheif up to version 1.21.2 (patched in 1.22.0) where inline mask size calculation in libheif/region.cc can overflow while parsing width and height as 32-bit unsigned ints. Their product can exceed UINT32_MAX, causing an undersized allocation and out-...

CVE-2026-32739

libheif (HEIF/AVIF decoder) is affected through versions 1.21.2 and earlier, where a crafted 800-byte HEIF sequence file can trigger an infinite loop in Box_stts::get_sample_duration() during parsing, causing 100% CPU DoS with no progress and no crashログ. The issue is triggered on file open and is...

CVE-2026-47254

CVE-2026-47254 affects libheif before 1.22.0. The issue arises when Track::init_sample_timing_table() stores an out-of-bounds chunk index into m_presentation_timeline if the stco-defined chunks are fewer than samples in stsz. A subsequent call to heif_track_get_next_raw_sequence_sample() reads m_...

CVE-2026-47251

CVE-2026-47251 affects libheif. The description reports that the fix for CVE-2026-3949 introduced an integer overflow check that can be bypassed, allowing a crafted HEIF file with a VVC track to trigger the same out-of-bounds heap read as CVE-2026-3949. This is described as a separate, currently-...