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CVE detail

CVE-2026-47709

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.

CVSS 6.9 · MediumBuzz score 23.41 public exploit repository references

Buzz score

Why this CVE is surfacing

Buzz score total 23.4

This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.

Buzz score components · mention 13.9 · diversity 5.0 · KEV 0.0 · OTX 0.0 · PoC 4.5
Mention score
13.9
3 evidence mentions in the snapshot
Diversity score
5.0
1 sources across 1 categories
KEV score
0.0
No KEV entry observed
OTX score
0.0
0 OTX pulses
PoC score
4.5
1 repos · best confidence 0.90
Best PoC traction
0
Maximum stars on a matched PoC repo

Why it matters now

Mention timeline

Total mentions
3
within the 30d window
Peak daily
3
highest bucket

Evidence

Source links by recency

Newest mentions first
3 source links · newest first

Exploit code

Public exploit repository references

Public PoC repositories are third-party, potentially unsafe artifacts. Treat their code as untrusted and use it only on authorized systems in an isolated, least-privilege environment. cvebuzz does not execute the code or verify that an exploit works.

1 repository references · best confidence 0.90 · max 0 stars
  • strukturag/libheifHigh confidence
    githubNVD Exploit reference0 starsDiscovered Jul 27, 2026, 6:10 PM

    NVD labels the source link as Exploit; this is not independent verification of the repository's code.

Related records

Similar CVEs

6 related CVEs with shared weakness or product evidence
  • CVE-2026-41069

    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…

    CVSS 6.5 · Medium
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  • CVE-2026-32738

    libheif is a HEIF and AVIF file format decoder and encoder. In versions 1.21.2 and below, a crafted 792-byte HEIF sequence file with samples_per_chunk=0 in the stsc box causes an…

    CVSS 6.5 · Medium
    1 mention
  • CVE-2025-43967

    libheif before 1.19.6 has a NULL pointer dereference in ImageItem_Grid::get_decoder in image-items/grid.cc because a grid image can reference a nonexistent image item.

    CVSS 2.9 · Low
    Public PoC observed3 mentions
  • CVE-2025-43966

    libheif before 1.19.6 has a NULL pointer dereference in ImageItem_iden in image-items/iden.cc.

    CVSS 2.9 · Low
    2 mentions
  • CVE-2026-73502

    kin-openapi is a Go project for handling OpenAPI files. From 0.2.0 until 0.144.0, openapi3filter.ValidateRequest can encounter a NULL-pointer-dereference denial of service when an…

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  • CVE-2026-50126

    Adaguc-server is an open source geographical information system to visualize, combine, compare and share real-time meteorological, climatological and remote sensing data via OGC s…

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