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.

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Fixes

Solution

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Workaround

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History

Mon, 02 Nov 2026 18:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Mon, 02 Nov 2026 16:15:00 +0000

Type Values Removed Values Added
First Time appeared Netpbm
Netpbm netpbm
Vendors & Products Netpbm
Netpbm netpbm

Mon, 02 Nov 2026 14:30:00 +0000

Type Values Removed Values Added
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.
Title Netpbm before 10.86.51, 11.02.30, and 11.15.08 Heap Overflow via jbigtopnm
First Time appeared Netpbm Project
Netpbm Project netpbm
Weaknesses CWE-190
CPEs cpe:2.3:a:netpbm_project:netpbm:*:*:*:*:*:*:*:*
Vendors & Products Netpbm Project
Netpbm Project netpbm
References
Metrics cvssV3_1

{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 8.5, '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'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-11-02T17:34:08.399Z

Reserved: 2026-11-02T12:42:14.231Z

Link: CVE-2026-120436

cve-icon Vulnrichment

Updated: 2026-11-02T17:10:26.243Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-11-02T15:17:25.440

Modified: 2026-11-02T19:14:53.030

Link: CVE-2026-120436

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-11-02T16:00:09Z

Weaknesses