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

Quick assessment

Affected

Netpbm Netpbm

Exploitation

No confirmed in-the-wild exploitation; assess based on exposure

Recommended action

Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Netpbm 在 10.86.51、11.02.30 和 11.15.08 之前的版本中，其组件存在整数溢出漏洞。攻击者可通过提供宽或高超过 32767 的恶意 ICO/CUR 图标文件，利用该漏洞破坏堆内存。该漏洞导致类型的循环计数器发生回绕，生成负数的行缓冲区索引，从而引发程序崩溃或潜在的攻击者代码执行。

CVSS 7.8 · High EPSS 0.17% · P6 Updated Nov 03, 2026

Possible ATT&CK Techniques 2 AI

T1203 · Exploitation for Client Execution T1190 · Exploit Public-Facing Application

Affected Version Matrix 3

Vendor	Product	Version Range	Status
Netpbm	Netpbm	`10.63< 10.86.51`	affected
		`11.0< 11.02.30`	affected
		`11.03< 11.15.08`	affected

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Vulnerability Information

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Vulnerability Title

Netpbm before 10.86.51, 11.02.30, and 11.15.08 Integer Overflow in winicontopam

Source: CVE Program / CVE List V5

Vulnerability 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.

Source: CVE Program / CVE List V5

CVSS Information

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

Source: CVE Program / CVE List V5

Vulnerability Type

整数溢出或超界折返

Source: CVE Program / CVE List V5

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
Netpbm	Netpbm	10.63 ~ 10.86.51	-

II. Public POCs for CVE-2026-120432

#	POC Description	Source Link	Shenlong Link

AI-Generated POC Premium

No public POC found.

III. Intelligence Information for CVE-2026-120432

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Other References for CVE-2026-120432 (6)

https://svn.code.sf.net/p/netpbm/code/!svn/bc/5371/super_stable/doc/HISTORY release-notes
https://svn.code.sf.net/p/netpbm/code/!svn/bc/5358/stable/doc/HISTORY release-notes
https://sourceforge.net/p/netpbm/code/5335/ patch
https://svn.code.sf.net/p/netpbm/code/!svn/bc/5357/advanced/doc/HISTORY release-notes
https://svn.code.sf.net/p/netpbm/code/!svn/bc/5334/trunk/converter/other/winicontopam.c technical-description
https://www.vulncheck.com/advisories/netpbm-before-10.86.51-11.02.30-and-11.15.08-integer-overflow-in-winicontopam third-party-advisory

https://www.cve.org/CVERecord?id=CVE-2026-120432

Same Patch Batch · Netpbm · 2026-11-02 · 7 CVEs total

CVE-2026-120433	7.8 HIGH	Netpbm before 10.86.51, 11.02.30, and 11.15.08 picttoppm Stack Buffer Overflow via paintPo
CVE-2026-120436	7.8 HIGH	Netpbm before 10.86.51, 11.02.30, and 11.15.08 Heap Overflow via jbigtopnm
CVE-2026-120435	7.8 HIGH	Netpbm before 10.86.51, 11.02.30, and 11.15.08 Heap Overflow in xpmtoppm
CVE-2026-120431	7.8 HIGH	Netpbm before 10.86.51, 11.02.29, and 11.15.07 sgitopnm Heap Buffer Overflow
CVE-2026-120434	7.8 HIGH	Netpbm before 10.86.51, 11.02.30, and 11.15.08 picttoppm Stack Overflow via scanPoly
CVE-2026-120437	6.1 MEDIUM	Netpbm before 10.86.51, 11.02.30, and 11.15.08 Out-of-Bounds Read via tgatoppm

IV. Related Vulnerabilities

Same product: Netpbm

Same vendor: Netpbm

Same weakness: CWE-190