CVE-2026-120436

Description

Netpbm before 10.86.51, 11.x before 11.02.30, and 11.03 before 11.15.08 contains an integer overflow in jbigtopnm that causes heap buffer overflow when computing output buffer size. Attackers can supply a crafted multi-plane JBIG file with large header dimensions so jbg_dec_merge_planes() overflows the undersized buffer, causing crashes or potentially code execution.

Overview

State: PUBLISHED
Assigner (CNA): VulnCheck
CVSS severity: HIGH
CVSS score: 8.5 / 10
CVSS vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Effective score: 8.5 / 10 HIGH source: CNA overview
CWE(s): CWE-190
Reserved: 2026-11-02
Published: 2026-11-02 14:28 UTC
Last updated: 2026-11-02 17:34 UTC
Source: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/120xxx/CVE-2026-120436.json
Linked Threat: CVE-2026-120436 — Netpbm before 10.86.51, 11.02.30, and 11.15.08 Heap Overflow via jbigtopnm

NVD triage scoring NVD CVE 2.0

Layer NVD adds on top of the CNA's CVE record — published / last-modified timestamps, exploitability / impact subscores, and the FIRST.org EPSS probability that this CVE will be exploited in the wild in the next 30 days.

NVD published: 2026-11-02 15:17:25 UTC
NVD last modified: 2026-11-02 19:14:53 UTC
NVD CVSS v3.1: 7.8 / 10 HIGH source: disclosure@vulncheck.com
NVD CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Exploitability subscore: 1.8 / 10
Impact subscore: 5.9 / 10

European Union Vulnerability Database ENISA EUVD

ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.

EUVD ID: EUVD-2026-115196

EUVD enrichment is queued; refresh the page in a few seconds.

Affected products (1)

Vendor	Product	Versions	Platforms
Netpbm	Netpbm	`0` (affected), `11.0` (affected), `11.03` (affected)	—

Vendor references (6)

References embedded in the original CVE record by the assigning CNA.

https://sourceforge.net/p/netpbm/code/5324/ patch
https://svn.code.sf.net/p/netpbm/code/!svn/bc/5358/stable/doc/HISTORY release-notes
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/5371/super_stable/doc/HISTORY release-notes
https://svn.code.sf.net/p/netpbm/code/!svn/bc/5323/trunk/converter/other/jbig/jbigtopnm.c technical-description
VulnCheck Advisory: Netpbm before 10.86.51, 11.02.30, and 11.15.08 Heap Overflow via jbigtopnm third-party-advisory

MITRE references (6) cveawg.mitre.org

Pulled from MITRE's CVE Services API by the 🛰 Backfill from MITRE button.

https://sourceforge.net/p/netpbm/code/5324/ patch
https://svn.code.sf.net/p/netpbm/code/!svn/bc/5323/trunk/converter/other/jbig/jbigtopnm.c technical-description
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/5358/stable/doc/HISTORY release-notes
https://svn.code.sf.net/p/netpbm/code/!svn/bc/5371/super_stable/doc/HISTORY release-notes
VulnCheck Advisory: Netpbm before 10.86.51, 11.02.30, and 11.15.08 Heap Overflow via jbigtopnm third-party-advisory

Web references (0)

DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.

No web references attached yet.

NVD-tagged references (6)

Reference list NVD curates from the CNA record, vendor advisories, and third-party reports. The tag chips below are NVD's analyst-assigned categories.

https://sourceforge.net/p/netpbm/code/5324/ disclosure@vulncheck.com
https://svn.code.sf.net/p/netpbm/code/!svn/bc/5323/trunk/converter/other/jbig/jbigtopnm.c disclosure@vulncheck.com
https://svn.code.sf.net/p/netpbm/code/!svn/bc/5357/advanced/doc/HISTORY disclosure@vulncheck.com
https://svn.code.sf.net/p/netpbm/code/!svn/bc/5358/stable/doc/HISTORY disclosure@vulncheck.com
https://svn.code.sf.net/p/netpbm/code/!svn/bc/5371/super_stable/doc/HISTORY disclosure@vulncheck.com
https://www.vulncheck.com/advisories/netpbm-before-10.86.51-11.02.30-and-11.15.08-heap-overflow-via-jbigtopnm disclosure@vulncheck.com

Remediations (10)

Remediations are stored against the linked Threat row; the list below is deduplicated across both pages.

Patch Management and Mitigation Supported Product Versions

web:docs.qualys.com

Supported Product Versions and Operating Systems Learn more about the products and operating system versions that are supported for Qualys Patch Management and Mitigation . Supported Windows Products Supported Windows Operating Systems Supported Linux Operating Systems Supported Mac Products

2026-11-03 08:20 UTC
Security Advisories and Bulletins | Microsoft Learn

web:learn.microsoft.com

In this library you will find the following security documents that have been released by the Microsoft Security Response Center (MSRC). The MSRC investigates all reports of security vulnerabilities affecting Microsoft products and services, and releases these documents as part of the ongoing effort ...

2026-11-03 08:20 UTC
2026 Catalog Release History - Patch My PC

web:patchmypc.com

You can find the production release history below for 2026 . View the 2025 Catalog Release History.

2026-11-03 08:20 UTC
Cisco Advance Notification for Publication of October 21, 2026 ...

web:sec.cloudapps.cisco.com

On October 21, 2026 , the Cisco Product Security Incident Response Team (PSIRT) published the following advisories. To remediate the vulnerabilities that were disclosed on October 21, 2026 , Cisco strongly recommends that customers upgrade to the fixed software that is indicated in the advisories. For more information about changes in Cisco PSIRT vulnerability disclosure, see Strengthening the ...

2026-11-03 08:20 UTC
Description of the security update for Office 2016: January 26, 2026 ...

web:support.microsoft.com

Summary This security update resolves a Microsoft Word security feature bypass vulnerability. To learn more about the vulnerability, see Microsoft Common Vulnerabilities and Exposures CVE - 2026 -21509.

2026-11-03 08:20 UTC
SAP Security Patch Day - February 2026

web:support.sap.com

SAP security Patch Day Bulletin This post shares the information on security notes that remediate vulnerabilities discovered in SAP products. SAP strongly recommends that the customer visits the Support Portal and applies patches on priority to protect their SAP landscape. On 10th of February 2026 , SAP security patch day saw the release of 26 new security notes. Further, there was 1 update to ...

2026-11-03 08:20 UTC
CVE: Common Vulnerabilities and Exposures

web:www.cve.org

At cve .org, we provide the authoritative reference method for publicly known information-security vulnerabilities and exposures

2026-11-03 08:20 UTC
Oracle Critical Patch Update Advisory - July 2026

web:www.oracle.com

This Critical Patch Update contains 1448 new security patches across the product families listed below. Please note that a My Oracle Support (MOS) note summarizing the content of this Critical Patch Update and other Oracle Software Security Assurance activities is located at July 2026 Critical Patch Update: Executive Summary and Analysis.

2026-11-03 08:20 UTC
Oracle Critical Security Patch Update Advisory - September 2026

web:www.oracle.com

Prior Critical Patch Update and Critical Security Patch Update advisories should be reviewed for information regarding earlier published security patches. Refer to Critical Patch Updates, Critical Security Patch Updates, Security Alerts and Bulletins for information about Oracle Security advisories.

2026-11-03 08:20 UTC
CVE-2026-12436: GitLab Auth Bypass Vulnerability - SentinelOne

web:www.sentinelone.com

CVE - 2026 -12436 is an authentication bypass vulnerability in GitLab CE/EE. Learn about its impact, affected versions, and mitigation methods.

2026-11-03 08:20 UTC

AI Forensic Analysis

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Raw JSON

The full cvelistV5 record. Download as CVE-2026-120436.json.

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