CVE-2026-120436

EUVD-2026-115196
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
VulnCheckCNA
7.8 HIGH
LOCAL
LOW
NONE
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources (CNA/ADP records, vendor advisories, Enginsight analysis).
VendorProductVersionSource
netpbm_projectnetpbm
𝑥
< 10.86.51
CNA
netpbm_projectnetpbm
11.0 ≤
𝑥
< 11.2.30
CNA
netpbm_projectnetpbm
11.3 ≤
𝑥
< 11.15.8
CNA
Common Weakness Enumeration
References
https://sourceforge.net/p/netpbm/code/5324/
https://svn.code.sf.net/p/netpbm/code/!svn/bc/5323/trunk/converter/other/jbig/jbigtopnm.c
https://svn.code.sf.net/p/netpbm/code/!svn/bc/5357/advanced/doc/HISTORY
https://svn.code.sf.net/p/netpbm/code/!svn/bc/5358/stable/doc/HISTORY
https://svn.code.sf.net/p/netpbm/code/!svn/bc/5371/super_stable/doc/HISTORY
https://www.vulncheck.com/advisories/netpbm-before-10.86.51-11.02.30-and-11.15.08-heap-overflow-via-jbigtopnm