High severity7.8NVD Advisory· Published Nov 2, 2026
CVE-2026-120436
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.
Affected products
1Patches
Vulnerability mechanics
References
6- sourceforge.net/p/netpbm/code/5324/nvd
- svn.code.sf.net/p/netpbm/code/!svn/bc/5323/trunk/converter/other/jbig/jbigtopnm.cnvd
- svn.code.sf.net/p/netpbm/code/!svn/bc/5357/advanced/doc/HISTORYnvd
- svn.code.sf.net/p/netpbm/code/!svn/bc/5358/stable/doc/HISTORYnvd
- svn.code.sf.net/p/netpbm/code/!svn/bc/5371/super_stable/doc/HISTORYnvd
- www.vulncheck.com/advisories/netpbm-before-10.86.51-11.02.30-and-11.15.08-heap-overflow-via-jbigtopnmnvd
News mentions
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