{"apiVersion":"1.0","identifier":"CVE-2026-41071","description":"libheif is a HEIF and AVIF file format decoder and encoder. In versions 1.21.2 and prior, a crafted HEIF sequence file where the saiz box declares more samples than actually exist in the track-s chunk table causes a heap-buffer-overflow (out-of-bounds read) in the SampleAuxInfoReader constructor. The SampleAuxInfoReader constructor iterates over saiz->get_num_samples() samples but doesn-t validate that this count is consistent with the number of chunks in the chunks vector. When saiz declares more samples than the chunks cover, the loop increments current_chunk past chunks.size(), causing an out-of-bounds read on the chunks vector. The vulnerability is triggered during file parsing (heif_context_read_from_file) without any additional user interaction. Any application using libheif to open untrusted HEIF files is affected. This issue has been fixed in version 1.22.0.","publishedAt":"2026-05-22T22:16:55","lastModifiedAt":null,"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-41071","cvssScore":5.1,"cvssVector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:L/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":0.00302,"riskScore":0.52,"affectedProduct":"libheif","affectedVersions":"<=1.21.2","vulnerabilityType":"Library","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-41071","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-41071","en":"https://www.redsauce.net/en/cves/CVE-2026-41071","fr":"https://www.redsauce.net/fr/cves/CVE-2026-41071","pt":"https://www.redsauce.net/pt/cves/CVE-2026-41071","de":"https://www.redsauce.net/de/cves/CVE-2026-41071","sk":"https://www.redsauce.net/sk/cves/CVE-2026-41071","el":"https://www.redsauce.net/el/cves/CVE-2026-41071"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-41071"}}