CVE-2026-120208 - libheif 1.18.0 before 1.23.3 Heap Buffer Overflow via unci Mixed-Interleave Decoder

CVE-2026-120208 - libheif 1.18.0 before 1.23.3 Heap Buffer Overflow via unci Mixed-Interleave Decoder

https://cvefeed.io/rssfeed/latest.atom / Sat, 10/31/2026 - 22:27
CVE ID :CVE-2026-120208
Published : Oct. 31, 2026, 6:17 p.m. | 3 hours, 7 minutes ago
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.
Severity: 7.7 | HIGH
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