CVE-2026-3713: medium-severity vulnerability in pnggroup libpng
pnggroup libpng pnm2png pnm2png.c do_pnm2png heap-based overflow
Published · Updated
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13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 4.8epss 0.1%
A flaw has been found in pnggroup libpng up to 1.6.55. Affected by this vulnerability is the function do_pnm2png of the file contrib/pngminus/pnm2png.c of the component pnm2png. This manipulation of the argument width/height causes heap-based buffer overflow. The attack is restricted to local execution. The exploit has been published and may be used. The project was informed of the problem early through an issue report but has not responded yet.
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
Affected products
pnggroup · libpngRelated CVEs — pnggroup libpng
In the same product, most dangerous first.
CVE-2026-25646HIGHLIBPNG has a heap buffer overflow in png_set_quantizeEPSS 1.1%CVE-2026-33416HIGHLIBPNG has use-after-free via pointer aliasing in `png_set_tRNS` and `png_set_PLTE`EPSS 1.1%CVE-2026-33636HIGHLIBPNG has ARM NEON Palette Expansion Out-of-Bounds Read on AArch64EPSS 0.8%CVE-2025-64720HIGHLIBPNG is vulnerable to a buffer overflow in `png_image_read_composite` via incorrect palette premultiplicationEPSS 0.4%CVE-2025-66293HIGHLIBPNG has an out-of-bounds read in png_image_read_compositeEPSS 0.4%CVE-2025-65018HIGHLIBPNG is vulnerable to a heap buffer overflow in `png_combine_row` triggered via `png_image_finish_read`EPSS 0.3%