{"id":"CVE-2026-120208","published":"2026-10-31T18:17:09.083","lastModified":"2026-10-31T18:17:09.210","description":"libheif 1.18.0 before 1.23.3 contains a heap-based buffer overflow vulnerability in unc_decoder_mixed_interleave::processTile() that allows attackers to write out of bounds by supplying chroma components with unequal bit depths. Attackers can craft a HEIF file declaring, for example, 16-bit Cb and 8-bit Cr to trigger file-controlled heap writes past the Cr plane, potentially achieving code execution in image-processing pipelines.","cvssScore":7.5,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","cwes":["CWE-122"],"vendors":[],"products":[],"references":[{"url":"https://github.com/strukturag/libheif/blob/v1.23.2/libheif/codecs/uncompressed/unc_decoder_mixed_interleave.cc#L95","tags":[]},{"url":"https://github.com/strukturag/libheif/commit/9d3cd91d7b1c8c68deef6d06057ab956bcb0dfb9","tags":[]},{"url":"https://github.com/strukturag/libheif/releases/tag/v1.23.3","tags":[]},{"url":"https://github.com/strukturag/libheif/security/advisories/GHSA-x8r2-mggj-j6wr","tags":[]},{"url":"https://www.vulncheck.com/advisories/libheif-1.18.0-before-1.23.3-heap-buffer-overflow-via-unci-mixed-interleave-decoder","tags":[]}],"exploitRefs":[{"url":"https://github.com/strukturag/libheif/blob/v1.23.2/libheif/codecs/uncompressed/unc_decoder_mixed_interleave.cc#L95","tags":[]},{"url":"https://github.com/strukturag/libheif/commit/9d3cd91d7b1c8c68deef6d06057ab956bcb0dfb9","tags":[]},{"url":"https://github.com/strukturag/libheif/releases/tag/v1.23.3","tags":[]},{"url":"https://github.com/strukturag/libheif/security/advisories/GHSA-x8r2-mggj-j6wr","tags":[]}],"hasPoc":true,"ai":null}