Heap-based Buffer Overflow Affecting ffmpeg package, versions [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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- published25 Jul 2026
- disclosed24 Jul 2026
- creditUnknown
Introduced: 24 Jul 2026
NewCVE-2026-66040 (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 Heap-based Buffer Overflow in the png_write_chunk process. An attacker can cause heap memory corruption, process crashes, or potentially achieve arbitrary code execution by supplying a crafted PNG image containing a malicious eXIf chunk with multiple IFD entries referencing the same large value payload, which leads to writing data past the allocated buffer boundary.