CVE-2026-112276

Netpbm through 11.16.00 contains a heap out-of-bounds read vulnerability in rasttopnm that allows attackers to read heap memory by supplying Sun rasterfiles with short colormaps. Attackers can craft colormapped rasterfiles with pixel bytes exceeding the palette length to leak up to 255 adjacent heap bytes into the PNM output or crash the program.

CVSS 4.0

6.9CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N

CVSS 3.1

6.1CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H

EPSS

0.2% chance of exploitation in the next 30 days; higher than 9% of CVEs (scores of 2026-10-25)

CWE

CWE-125

Published

2026-10-19

Modified

2026-10-19

Record from

the NVD, synced 2026-10-21

References

• https://hackmd.io/@haindpwn/netpbm-sunraster-rle-oob-write-palette-oob-read
• https://netpbm.sourceforge.net/
• https://sourceforge.net/p/netpbm/code/5400/tree/advanced/converter/other/rast.c
• https://sourceforge.net/p/netpbm/code/5400/tree/advanced/converter/other/rasttopnm.c
• https://www.vulncheck.com/advisories/netpbm-through-11.16.00-heap-out-of-bounds-read-via-rasttopnm-colormap

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