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Vulnerability · Published Nov 2, 2026 · Assigned by VulnCheck

CVE-2026-120432Netpbm before 10.86.51, 11.02.30, and 11.15.08 Integer Overflow in winicontopam

High 7.8

In plain English

A high-severity integer overflow in Netpbm from Netpbm. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 6% of all known vulnerabilities).

Severity (CVSS 3.1)7.8High
Exploit odds (30 days)0.2%top 93.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

Netpbm before 10.86.51, 11.02.30, and 11.15.08 contains an integer overflow vulnerability in winicontopam that allows attackers to corrupt heap memory via oversized ICO/CUR dimensions. Attackers can supply a crafted icon file with width or height above 32767, wrapping int16_t loop counters into negative row buffer indices to cause crashes or potential code execution.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12netpbm-freeno fix listedDEBIAN-CVE-2026-120432
Debian:13netpbm-freeno fix listedDEBIAN-CVE-2026-120432
Debian:14netpbm-freeno fix listedDEBIAN-CVE-2026-120432
Ubuntu:22.04:LTSnetpbm-freeno fix listedUBUNTU-CVE-2026-120432
Ubuntu:24.04:LTSnetpbm-freeno fix listedUBUNTU-CVE-2026-120432
Ubuntu:26.04:LTSnetpbm-freeno fix listedUBUNTU-CVE-2026-120432
Ubuntu:26.10netpbm-freeno fix listedUBUNTU-CVE-2026-120432

Affected products (as reported)

VendorProductVersions
Netpbm Netpbm 10.63 – before 10.86.5111.0 – before 11.02.3011.03 – before 11.15.08

Weakness: CWE-190 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References