Out-of-bounds Write Affecting libheif package, versions [1.19.0,]
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-CONAN-LIBHEIF-18302920
- published25 Jul 2026
- disclosed21 Jul 2026
- creditUnknown
Introduced: 21 Jul 2026
NewCVE-2026-47178 (opens in a new tab)How to fix?
A fix was pushed into the master branch but not yet published.
Overview
Affected versions of this package are vulnerable to Out-of-bounds Write via the unci tile decoding process. An attacker can achieve arbitrary code execution by supplying a specially crafted HEIF file that triggers a heap out-of-bounds write, allowing the overwrite of a C++ vtable pointer and subsequent redirection of virtual function calls.