CVE-2026-120436
Netpbm before 10.86.51, 11.02.30, and 11.15.08 Heap Overflow via jbigtopnm
CVSS Score
7.8
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-190 |
| Vendor | netpbm |
| Product | netpbm |
| Published | Nov 2, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
Netpbm / Netpbm
0 < 10.86.51 11.0 < 11.02.30 11.03 < 11.15.08
References
sourceforge.net: https://sourceforge.net/p/netpbm/code/5324/ svn.code.sf.net: https://svn.code.sf.net/p/netpbm/code/!svn/bc/5358/stable/doc/HISTORY svn.code.sf.net: https://svn.code.sf.net/p/netpbm/code/!svn/bc/5357/advanced/doc/HISTORY svn.code.sf.net: https://svn.code.sf.net/p/netpbm/code/!svn/bc/5371/super_stable/doc/HISTORY svn.code.sf.net: https://svn.code.sf.net/p/netpbm/code/!svn/bc/5323/trunk/converter/other/jbig/jbigtopnm.c vulncheck.com: https://www.vulncheck.com/advisories/netpbm-before-10.86.51-11.02.30-and-11.15.08-heap-overflow-via-jbigtopnm
Credits
Tristan Madani (Talence Security) Bryan Henderson