Out-of-bounds Read Affecting libpng 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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Test your applications- Snyk IDSNYK-CONAN-LIBPNG-15849595
- published30 Mar 2026
- disclosed26 Mar 2026
- creditAmemoyoi
Introduced: 26 Mar 2026
NewCVE-2026-33636 (opens in a new tab)How to fix?
There is no fixed version for libpng.
Overview
Affected versions of this package are vulnerable to Out-of-bounds Read through the NEON palette expansion functions in arm/palette_neon_intrinsics.c. An attacker can corrupt memory or crash the application by supplying a PNG row whose width is not a multiple of the NEON chunk size.
Notes
- The vulnerable code advanced in fixed-size chunks without stopping before the final partial chunk, so the NEON path could overrun the row buffer before handing control to the scalar fallback.
- This is only exploitable if build targets ARM/AArch64 with Neon enabled