libheif is a HEIF and AVIF file format decoder and encoder. In versions 1.21.2 and prior, a malformed HEIF sequence file can trigger an out-of-bounds read in core sequence parsing logic, causing DoS. A malformed file can have stco.entry_count == 0 (creating no chunks) while still passing validation because saio.entry_count == 0 matches, but with saiz.sample_count > 0 the SampleAuxInfoReader constructor still enters its loop. This leads to an out-of-bounds dereference on the empty chunks[0] in chunked mode.
Metrics
Affected Vendors & Products
References
History
Wed, 27 May 2026 15:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| CPEs | cpe:2.3:a:struktur:libheif:*:*:*:*:*:*:*:* |
Tue, 26 May 2026 13:15:00 +0000
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| Metrics |
ssvc
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Mon, 25 May 2026 11:45:00 +0000
| Type | Values Removed | Values Added |
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| First Time appeared |
Struktur
Struktur libheif |
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| Vendors & Products |
Struktur
Struktur libheif |
Fri, 22 May 2026 21:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | libheif is a HEIF and AVIF file format decoder and encoder. In versions 1.21.2 and prior, a malformed HEIF sequence file can trigger an out-of-bounds read in core sequence parsing logic, causing DoS. A malformed file can have stco.entry_count == 0 (creating no chunks) while still passing validation because saio.entry_count == 0 matches, but with saiz.sample_count > 0 the SampleAuxInfoReader constructor still enters its loop. This leads to an out-of-bounds dereference on the empty chunks[0] in chunked mode. | |
| Title | libheif allows Out-of-bounds vector access leading to invalid dereference (DoS) | |
| Weaknesses | CWE-125 CWE-476 |
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| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: GitHub_M
Published: 2026-05-22T20:49:16.735Z
Updated: 2026-05-26T12:16:13.289Z
Reserved: 2026-04-16T16:43:03.174Z
Link: CVE-2026-41069
Updated: 2026-05-26T12:16:08.375Z
Status : Analyzed
Published: 2026-05-22T21:16:43.327
Modified: 2026-05-27T15:26:28.040
Link: CVE-2026-41069
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