{"id":"CVE-2026-120436","title":"Netpbm before 10.86.51, 11.02.30, and 11.15.08 Heap Overflow via jbigtopnm","summary":"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 wi…","severity":"high","cvss":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","cvssSource":"cna","cwe":["CWE-190"],"vendor":"Netpbm","product":"Netpbm","affected":["Netpbm < 10.86.51","Netpbm >= 11.0 < 11.02.30","Netpbm >= 11.03 < 11.15.08"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-11-02T17:10:22.514852Z"},"published":"2026-11-02","updated":"2026-11-02","sourceUpdated":"2026-11-02T17:34:08.399Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-120436","references":[{"url":"https://sourceforge.net/p/netpbm/code/5324/"},{"url":"https://svn.code.sf.net/p/netpbm/code/!svn/bc/5358/stable/doc/HISTORY"},{"url":"https://svn.code.sf.net/p/netpbm/code/!svn/bc/5357/advanced/doc/HISTORY"},{"url":"https://svn.code.sf.net/p/netpbm/code/!svn/bc/5371/super_stable/doc/HISTORY"},{"url":"https://svn.code.sf.net/p/netpbm/code/!svn/bc/5323/trunk/converter/other/jbig/jbigtopnm.c"},{"url":"https://www.vulncheck.com/advisories/netpbm-before-10.86.51-11.02.30-and-11.15.08-heap-overflow-via-jbigtopnm","label":"VulnCheck Advisory: Netpbm before 10.86.51, 11.02.30, and 11.15.08 Heap Overflow via jbigtopnm"}],"tags":["cve.org"],"epss":0.00182,"epssPercentile":0.07844,"ingestedAt":"2026-11-05T19:30:42.732Z","slug":"CVE-2026-120436","body":"## Overview\n\nNetpbm 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.\n\n## Affected\n\n- `Netpbm < 10.86.51`\n- `Netpbm >= 11.0 < 11.02.30`\n- `Netpbm >= 11.03 < 11.15.08`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}