HIGH 7.5 Microsoft
CVE-2026-33416
LIBPNG has use-after-free via pointer aliasing in `png_set_tRNS` and `png_set_PLTE`
Microsoft Security Update 2026-Mar: LIBPNG has use-after-free via pointer aliasing in `png_set_tRNS` and `png_set_PLTE`
Affected Products
- azl3 libpng 1.6.55-1 on Azure Linux 3.0
- cbl2 libpng 1.6.55-1 on CBL Mariner 2.0
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-33416
- https://nvd.nist.gov/vuln/detail/CVE-2026-33416
This high severity vulnerability with a CVSS score of 7.5 was published on 2026-03-10 via Microsoft. Affected: azl3 libpng 1.6.55-1 on Azure Linux 3.0, cbl2 libpng 1.6.55-1 on CBL Mariner 2.0.
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