CVE-2026-120431

High

Description

Netpbm before 10.86.51, 11.x before 11.02.29, and 11.03 before 11.15.07 contains a heap-based buffer overflow in sgitopnm's readChannels() function when processing RLE-compressed SGI images. Attackers can supply crafted SGI files with oversized offset table lengths to write controlled data past the heap buffer, causing crashes or potential code execution.

SeverityHigh

CVSS7.8

Exploit probability—

ProductNetpbm

PublishedNov 2, 2026

First seenNov 4, 2026

Weakness typeCWE-122CWE-122

How to fix

Update

Netpbm Netpbm10.86.51, 11.02.29, 11.15.07 or later

Patches

sourceforge.net/p/netpbm/code/5317/

Vendor advisories

Affected products

Product	Affected versions	Fixed in
Netpbm Netpbm	v < 10.86.51, 11.0 ≤ v < 11.02.29, 11.03 ≤ v < 11.15.07	10.86.51, 11.02.29, 11.15.07

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