CVE-2026-47178— libheif has Heap Out Of Bounds Write in unci subsystem
Possible ATT&CK Techniques 1AI
T1190 · Exploit Public-Facing ApplicationAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| strukturag | libheif | >= 1.19.0, < 1.22.0 | affected |
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I. Basic Information for CVE-2026-47178
Vulnerability Information
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Vulnerability Title
libheif has Heap Out Of Bounds Write in unci subsystem
Source: CVE Program / CVE List V5
Vulnerability Description
libheif is a HEIF and AVIF file format decoder and encoder. In versions 1.19.0 through 1.21.2, a crafted HEIF file (uncompressed `unci` codec, tiled, component-interleaved, 4:2:0) triggers a heap out-of-bounds write in libheif's uncompressed tile decoder. The write overwrites the C++ vtable pointer of an adjacent `unc_decoder_component_interleave` object; the next virtual call dispatches to an attacker-chosen address. Version 1.22.0 patches the issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存写
Source: CVE Program / CVE List V5
Vulnerability Title
strukturag libheif 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
strukturag libheif是strukturag的图像编解码库。 strukturag libheif 1.19.0版本至1.21.2版本存在缓冲区错误漏洞，该漏洞源于特制HEIF文件触发了非压缩图块解码器中的堆越界写入，覆盖了相邻对象的C++虚表指针，可能导致攻击者控制下一条虚函数调用地址。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| strukturag | libheif | >= 1.19.0, < 1.22.0 | - |
II. Public POCs for CVE-2026-47178
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-47178 (1)
Same Patch Batch · strukturag · 2026-07-21 · 8 CVEs total
| CVE-2026-47247 | 7.5 HIGH | libheif Vulnerable to Heap Information Disclosure via Grid Image Gap + Uninitialized Pixel |
| CVE-2026-47254 | 6.1 MEDIUM | libheif Has Heap Buffer Overflow in `Track::get_next_sample_raw_data()` -- OOB Chunk Vecto |
| CVE-2026-47714 | 6.1 MEDIUM | libheif has integer overflow in inline mask size calculation that causes undersized buffer |
| CVE-2026-45383 | libde265 has a heap buffer overflow (OOB read) in decode_slice_unit_WPP() via out-of-bound | |
| CVE-2026-45382 | libde265 has a heap-buffer-overflow READ in decode_slice_unit_tiles via unvalidated PPS ti | |
| CVE-2026-47709 | libheif has a NULL pointer dereference in heif_image_handle_get_image_tiling for malformed | |
| CVE-2026-47251 | libheif has an incomplete fix for CVE-2026-3949: integer overflow bypass in vvdec_push_dat |
IV. Related Vulnerabilities
Same product: libheif
- CVE-2026-48029
libheif: heap OOB read in ImageItem_Grid::decode_grid_tile v - CVE-2026-47709
libheif has a NULL pointer dereference in heif_image_handle_ - CVE-2026-47254
libheif Has Heap Buffer Overflow in `Track::get_next_sample_ - CVE-2026-47251
libheif has an incomplete fix for CVE-2026-3949: integer ove - CVE-2026-47247
libheif Vulnerable to Heap Information Disclosure via Grid I
Same vendor: strukturag
- CVE-2026-48029
libheif: heap OOB read in ImageItem_Grid::decode_grid_tile v - CVE-2026-47709
libheif has a NULL pointer dereference in heif_image_handle_ - CVE-2026-47254
libheif Has Heap Buffer Overflow in `Track::get_next_sample_ - CVE-2026-47251
libheif has an incomplete fix for CVE-2026-3949: integer ove - CVE-2026-47247
libheif Vulnerable to Heap Information Disclosure via Grid I
Same weakness: CWE-787
- CVE-2026-64835
FFmpeg 4.4 - 8.1.2 Out-of-Bounds Memory Access in ADX Audio - CVE-2026-16413
Google Chrome 缓冲区错误漏洞 - CVE-2026-59147
Data::DisjointSet::Shared versions before 0.02 for Perl allo - CVE-2026-59146
Data::SpatialHash::Shared versions before 0.02 for Perl allo - CVE-2026-15813
Kronosnet: kronosnet: memory corruption and out-of-bounds ac
V. Comments for CVE-2026-47178
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