CVE-2026-120434

High

Description

Netpbm before 10.86.51, 11.x before 11.02.30, and 11.03 before 11.15.08 contains a stack-based buffer overflow in picttoppm's scanPoly() function in converter/ppm/picttoppm.c. Attackers can supply a crafted PICT file whose polygon edges produce more than 5000 points, overflowing the coord stack array to crash the converter or potentially execute code.

SeverityHigh

CVSS7.8

Exploit probability—

ProductNetpbm

PublishedNov 2, 2026

First seenNov 4, 2026

Weakness typeCWE-121CWE-121

How to fix

Update

Netpbm Netpbm10.86.51, 11.02.30, 11.15.08 or later

Patches

sourceforge.net/p/netpbm/code/5331/

Vendor advisories

Affected products

Product	Affected versions	Fixed in
Netpbm Netpbm	v < 10.86.51, 11.0 ≤ v < 11.02.30, 11.03 ≤ v < 11.15.08	10.86.51, 11.02.30, 11.15.08

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