CVE-2026-49271— libheif: Wrapped icef compressed-unit range check causes out-of-bounds read in uncompressed HEIF decoder
Possible ATT&CK Techniques 1AI
T1203 · Exploitation for Client ExecutionAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| strukturag | libheif | < 1.22.1 | affected |
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I. Basic Information for CVE-2026-49271
Vulnerability Information
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Vulnerability Title
libheif: Wrapped icef compressed-unit range check causes out-of-bounds read in uncompressed HEIF decoder
Source: NVD (National Vulnerability Database)
Vulnerability Description
libheif is a HEIF and AVIF file format decoder and encoder. Prior to version 1.22.1, the uncompressed HEIF decoder validates explicit icef compressed-unit offsets using unit_offset + unit_size. Because the addition can wrap, a crafted HEIF file can pass the range check and then construct a vector from iterators outside the compressed item buffer, producing an out-of-bounds heap read and crash. Version 1.22.1 patches the issue.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
跨界内存读
Source: NVD (National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| strukturag | libheif | < 1.22.1 | - |
II. Public POCs for CVE-2026-49271
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-49271 (1)
Same Patch Batch · strukturag · 2026-06-19 · 4 CVEs total
| CVE-2026-49346 | 7.1 HIGH | libde265 has a heap buffer overflow in de265_image_get_buffer via SPS dimension integer ov |
| CVE-2026-49295 | 7.1 HIGH | libde265 has an out-of-bounds write in process_reference_picture_set via predicted short-t |
| CVE-2026-49337 | 4.3 MEDIUM | libde265 has an unbounded memory leak via orphaned slice headers in `read_slice_NAL` |
IV. Related Vulnerabilities
Same product: libheif
- CVE-2026-41071
libheif: Heap buffer over-read in SampleAuxInfoReader via cr - CVE-2026-41069
libheif allows Out-of-bounds vector access leading to invali - CVE-2026-32882
libheif: Heap Buffer OOB Read in overlay compositing due to - CVE-2026-32741
libheif has a heap buffer overflow in decode_mask_image() - CVE-2026-32814
libheif: Uninitialized Heap Memory Information Leak via Fail
Same vendor: strukturag
- CVE-2026-49346
libde265 has a heap buffer overflow in de265_image_get_buffe - CVE-2026-49295
libde265 has an out-of-bounds write in process_reference_pic - CVE-2026-49337
libde265 has an unbounded memory leak via orphaned slice hea - CVE-2026-41071
libheif: Heap buffer over-read in SampleAuxInfoReader via cr - CVE-2026-41069
libheif allows Out-of-bounds vector access leading to invali
Same weakness: CWE-125
- CVE-2026-54341
Dragonfly: RESTORE operations may crash the server - CVE-2026-12340
Out-of-bounds heap read in SM2/SM3 certificate Subject Key I - CVE-2026-56788
RTKLIB 2.4.3 - Out-of-bounds Read via Negative Array Index i - CVE-2026-12897
Out-of-bounds read in Horner Automation Cscape - CVE-2026-6094
Heap buffer overread in wc_PKCS7_DecodeEnvelopedData parsing
V. Comments for CVE-2026-49271
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