{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-47709", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-05-19T21:29:25.481Z", "datePublished": "2026-07-21T21:31:14.724Z", "dateUpdated": "2026-07-21T21:31:14.724Z"}, "containers": {"cna": {"title": "libheif has a NULL pointer dereference in heif_image_handle_get_image_tiling for malformed unci image missing ispe", "problemTypes": [{"descriptions": [{"cweId": "CWE-476", "lang": "en", "description": "CWE-476: NULL Pointer Dereference", "type": "CWE"}]}], "metrics": [{"cvssV4_0": {"attackVector": "LOCAL", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 6.9, "baseSeverity": "MEDIUM", "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N", "version": "4.0"}}], "references": [{"name": "https://github.com/strukturag/libheif/security/advisories/GHSA-4h72-vqgp-9376", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/strukturag/libheif/security/advisories/GHSA-4h72-vqgp-9376"}, {"name": "https://github.com/strukturag/libheif/issues/1802", "tags": ["x_refsource_MISC"], "url": "https://github.com/strukturag/libheif/issues/1802"}, {"name": "https://github.com/strukturag/libheif/pull/1806", "tags": ["x_refsource_MISC"], "url": "https://github.com/strukturag/libheif/pull/1806"}], "affected": [{"vendor": "strukturag", "product": "libheif", "versions": [{"version": "< 1.22.0", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-07-21T21:31:14.724Z"}, "descriptions": [{"lang": "en", "value": "libheif is a HEIF and AVIF file format decoder and encoder. Versions prior to 1.22.0 crashes in the public C API `heif_image_handle_get_image_tiling()` when a malformed uncompressed HEIF image item has an associated `uncC` property but no associated `ispe` property. In debug builds this trips the `ispe && uncC` assertion in `ImageItem_uncompressed::get_heif_image_tiling()`. In a release/NDEBUG ASan build, the same file causes a null pointer read at address `0xa8`. Version 1.22.0 fixes the issue."}], "source": {"advisory": "GHSA-4h72-vqgp-9376", "discovery": "UNKNOWN"}}}}

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