Netpbm free: Netpbm before 10.86.51, 11.x before 11.02.30, and 11.03 before 11.15.08 contains an integer overflow in
Affects netpbm-freeSource GCVE Database
Not known to be exploited · CVSS 8.5 High.
Data as of 5 Nov 2026, 12:36 UTC
Thin evidence
One scorer or none| CNA (VulnCheck) | CVSS 4.0 | 8.5 |
|---|---|---|
| CNA (VulnCheck) | CVSS 3.1 | 7.8 |
| CNA | CVSS 4.0 | 8.5 |
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:NExploitation evidence
Disclosed: evidence found.
CVE published 2 Nov 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 5 Nov 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 26.10netpbm-freepkg:deb/ubuntu/netpbm-free?arch=source&distro=stonkingOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSnetpbm-freepkg:deb/ubuntu/netpbm-free?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 24.04 LTSnetpbm-freepkg:deb/ubuntu/netpbm-free?arch=source&distro=nobleOther threats | Affected
| Fixed in– |
Ubuntu 22.04 LTSnetpbm-freepkg:deb/ubuntu/netpbm-free?arch=source&distro=jammyOther threats | Affected
| Fixed in– |
Ubuntu 20.04 LTSnetpbm-freepkg:deb/ubuntu/netpbm-free?arch=source&distro=focalOther threats | Affected
| Fixed in– |
Ubuntu 18.04 LTSnetpbm-freepkg:deb/ubuntu/netpbm-free?arch=source&distro=bionicOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
Description
Netpbm versions before 10.86.51, 11.x before 11.02.30, and 11.03 before 11.15.08 contain an integer overflow vulnerability in the jbigtopnm component. This flaw causes a heap buffer overflow when calculating the output buffer size. An attacker can exploit this by supplying a crafted multi-plane JBIG file with large header dimensions, leading to a buffer overflow in jbg_dec_merge_planes(), potentially causing application crashes or arbitrary code execution.
References
- ubuntu.com/security/CVE-2026-120436 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-120436 (opens in a new tab)
- sourceforge.net/p/netpbm/code/5324/ (opens in a new tab)
- svn.code.sf.net/p/netpbm/code/!svn/bc/5323/trunk/converter/other/jbig/jbigtopnm.c (opens in a new tab)
- svn.code.sf.net/p/netpbm/code/!svn/bc/5357/advanced/doc/HISTORY (opens in a new tab)
- svn.code.sf.net/p/netpbm/code/!svn/bc/5358/stable/doc/HISTORY (opens in a new tab)
- svn.code.sf.net/p/netpbm/code/!svn/bc/5371/super_stable/doc/HISTORY (opens in a new tab)
- vulncheck.com/advisories/netpbm-before-10.86.51-11.02.30-and-11.15.08-heap-overflow-via-jbigtopnm (opens in a new tab)