{"affected":[{"defaultStatus":"unaffected","product":"Netpbm","source":"CNA: VulnCheck","vendor":"Netpbm","versions":[{"lessThan":"10.86.51","status":"affected","version":"0","versionType":"custom"},{"lessThan":"11.02.30","status":"affected","version":"11.0","versionType":"custom"},{"lessThan":"11.15.08","status":"affected","version":"11.03","versionType":"custom"}]}],"cveId":"CVE-2026-120434","cwes":["CWE-121"],"description":"Netpbm before 10.86.51, 11.x before 11.02.30, and 11.03 before 11.15.08 contains a stack-based buffer overflow in picttoppm's scanPoly() function in converter/ppm/picttoppm.c. Attackers can supply a crafted PICT file whose polygon edges produce more than 5000 points, overflowing the coord stack array to crash the converter or potentially execute code.","epss":null,"exploits":[],"kev":null,"metrics":[{"score":8.5,"severity":"high","source":"CNA: VulnCheck","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","version":"4.0"},{"score":7.8,"severity":"high","source":"CNA: VulnCheck","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","version":"3.1"}],"modifiedAt":1793629737796,"publishedAt":1793629737796,"references":[{"source":"CNA: VulnCheck","tags":["patch"],"url":"https://sourceforge.net/p/netpbm/code/5331/"},{"source":"CNA: VulnCheck","tags":["release-notes"],"url":"https://svn.code.sf.net/p/netpbm/code/!svn/bc/5358/stable/doc/HISTORY"},{"source":"CNA: VulnCheck","tags":["release-notes"],"url":"https://svn.code.sf.net/p/netpbm/code/!svn/bc/5357/advanced/doc/HISTORY"},{"source":"CNA: VulnCheck","tags":["release-notes"],"url":"https://svn.code.sf.net/p/netpbm/code/!svn/bc/5371/super_stable/doc/HISTORY"},{"source":"CNA: VulnCheck","tags":["technical-description"],"url":"https://svn.code.sf.net/p/netpbm/code/!svn/bc/5330/trunk/converter/ppm/picttoppm.c"},{"source":"CNA: VulnCheck","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/netpbm-before-10.86.51-11.02.30-and-11.15.08-picttoppm-stack-overflow-via-scanpoly"}],"remediation":[],"revision":"091a9d2c0f643f840a0b42bf98d9adf21e5ec861e81f4e35af81fc0861962696","sources":[{"modifiedAt":1793629737796,"name":"CNA: VulnCheck","retrievedAt":1793632123503,"url":"https://www.cve.org/CVERecord?id=CVE-2026-120434"}],"ssvc":null,"status":"published","title":"Netpbm before 10.86.51, 11.02.30, and 11.15.08 picttoppm Stack Overflow via scanPoly","updatedAt":1793632123503}