CVE-2026-120435

High

Description

Netpbm before 10.86.51, 11.x before 11.02.30, and 11.03 before 11.15.08 contains a heap buffer overflow in xpmtoppm caused by an unvalidated characters-per-pixel value in the XPM header. Attackers can supply a crafted XPM file with characters-per-pixel greater than 3 to overrun fixed 3-byte colorName hash entries, causing crashes or potentially code execution.

SeverityHigh

CVSS7.8

Exploit probability—

ProductNetpbm

PublishedNov 2, 2026

First seenNov 4, 2026

Weakness typeCWE-787Out-of-bounds write

How to fix

Update

Netpbm Netpbm10.86.51, 11.02.30, 11.15.08 or later

Patches

sourceforge.net/p/netpbm/code/5336/

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

Check your version

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