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CVE-2026-120431— Netpbm before 10.86.51, 11.02.29, and 11.15.07 sgitopnm Heap Buffer Overflow

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.

在 10.86.51 之前的 Netpbm 版本、11.x 系列中 11.02.29 之前的版本，以及 11.03 系列中 11.15.07 之前的版本，其工具中的函数在处理 RLE 压缩的 SGI 图像时存在基于堆的缓冲区溢出漏洞。攻击者可构造包含超大偏移表长度的 SGI 文件，从而将受控数据写入堆缓冲区之外，导致程序崩溃或潜在的代码执行。

CVSS 7.8 · High Updated Nov 02, 2026

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 3

Vendor	Product	Version Range	Status
Netpbm	Netpbm	`< 10.86.51`	affected
		`11.0< 11.02.29`	affected
		`11.03< 11.15.07`	affected

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Vulnerability Information

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Vulnerability Title

Netpbm before 10.86.51, 11.02.29, and 11.15.07 sgitopnm Heap Buffer Overflow

Source: CVE Program / CVE List V5

Vulnerability 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.

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

堆缓冲区溢出

Source: CVE Program / CVE List V5

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
Netpbm	Netpbm	0 ~ 10.86.51	-

II. Public POCs for CVE-2026-120431

#	POC Description	Source Link	Shenlong Link

AI-Generated POC Premium

No public POC found.

III. Intelligence Information for CVE-2026-120431

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Other References for CVE-2026-120431 (6)

https://svn.code.sf.net/p/netpbm/code/!svn/bc/5371/super_stable/doc/HISTORY release-notes
https://sourceforge.net/p/netpbm/code/5317/ patch
https://svn.code.sf.net/p/netpbm/code/!svn/bc/5316/trunk/converter/other/sgitopnm.c technical-description
https://svn.code.sf.net/p/netpbm/code/!svn/bc/5319/stable/doc/HISTORY release-notes
https://svn.code.sf.net/p/netpbm/code/!svn/bc/5318/advanced/doc/HISTORY release-notes
https://www.vulncheck.com/advisories/netpbm-before-10.86.51-11.02.29-and-11.15.07-sgitopnm-heap-buffer-overflow third-party-advisory

https://www.cve.org/CVERecord?id=CVE-2026-120431

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-2026-120432	7.8 HIGH	Netpbm before 10.86.51, 11.02.30, and 11.15.08 Integer Overflow in winicontopam
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-122