CVE-2026-120436
Netpbm before 10.86.51, 11.02.30, and 11.15.08 Heap Overflow via jbigtopnm
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.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Passive
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Netpbm before 10.86.51, 11.02.30, and 11.15.08 Heap Overflow via jbigtopnm
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.
- Record
CVE-2026-120436- CVSS 4.0
- 8.5 High
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 - CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Weakness
- CWE-190
- Updated
- 2026-11-02
EUVDEUVD-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.
- Record
EUVD-2026-115196- CVSS 4.0
- 8.5 High
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 - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-wj4q-h4hq-8gh7
Netpbm before 10.86.51, 11.x before 11.02.30, and 11.03 before 11.15.08 contains an integer...
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.
- Record
GHSA-wj4q-h4hq-8gh7- CVSS 4.0
- 8.5 High
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Weakness
- CWE-190
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2026-120436- CVSS 4.0
- 8.5 High
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Weakness
- CWE-190
- Updated
- 2026-11-03
OSVDEBIAN-CVE-2026-120436
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.
- Record
DEBIAN-CVE-2026-120436- CVSS 4.0
- 8.5 High
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - Updated
- 2026-11-04
OSVUBUNTU-CVE-2026-120436
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.
- Record
UBUNTU-CVE-2026-120436- CVSS 4.0
- 8.5 High
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 - CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Updated
- 2026-11-05
OSVopenSUSE-SU-2026:12463-1 No score
libnetpbm-devel-11.16.1-2.1 on GA media
These are all security issues fixed in the libnetpbm-devel-11.16.1-2.1 package on the GA media of openSUSE Tumbleweed.
- Record
openSUSE-SU-2026:12463-1- Updated
- 2026-11-07
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
netpbm-freeDebian:12 |
All versions, plus listed versions 2:11.01.00-22:11.03.00-12:11.03.00-22:11.03.00-32:11.03.06-1 Show 33 moreShow less2:11.04.05-12:11.04.05-22:11.05.01-12:11.05.01-22:11.05.01-32:11.05.02-12:11.05.02-1.12:11.05.02-1.1~exp12:11.05.03-12:11.06.00-12:11.06.01-12:11.06.01-22:11.07.00-12:11.07.00-22:11.07.01-12:11.08.00-12:11.08.01-12:11.08.02-12:11.09.02-12:11.09.02-22:11.09.03-12:11.10.02-12:11.11.00-12:11.11.00-22:11.11.01-12:11.12.00-12:11.13.00-12:11.13.00-22:11.13.00-32:11.13.03+ds-12:11.13.03+ds-22:11.13.03-12:11.15.04+ds-1 |
None known |
netpbm-freeDebian:13 |
All versions, plus listed versions 2:11.10.02-12:11.11.00-12:11.11.00-22:11.11.01-12:11.12.00-1 Show 7 moreShow less2:11.13.00-12:11.13.00-22:11.13.00-32:11.13.03+ds-12:11.13.03+ds-22:11.13.03-12:11.15.04+ds-1 |
None known |
netpbm-freeDebian:14 |
All versions, plus listed versions 2:11.10.02-12:11.11.00-12:11.11.00-22:11.11.01-12:11.12.00-1 Show 7 moreShow less2:11.13.00-12:11.13.00-22:11.13.00-32:11.13.03+ds-12:11.13.03+ds-22:11.13.03-12:11.15.04+ds-1 |
None known |
netpbm-freeUbuntu:16.04:LTS |
All versions, plus listed versions 2:10.0-15.22:10.0-15.3 |
None known |
netpbm-freeUbuntu:18.04:LTS |
All versions, plus listed versions 2:10.0-15.3build1 |
None known |
netpbm-freeUbuntu:20.04:LTS |
All versions, plus listed versions 2:10.0-15.3build1 |
None known |
netpbm-freeUbuntu:22.04:LTS |
All versions, plus listed versions 2:10.0-15.4 |
None known |
netpbm-freeUbuntu:24.04:LTS |
All versions, plus listed versions 2:11.01.00-2build12:11.03.06-12:11.04.05-22:11.05.01-32:11.05.02-12:11.05.02-1.12:11.05.02-1.1build1 |
None known |
netpbm-freeUbuntu:26.10 |
All versions, plus listed versions 2:11.10.02-1build12:11.13.03+ds-2 |
None known |
netpbm-freeUbuntu:26.04:LTS |
All versions, plus listed versions 2:11.10.02-1build1 |
None known |
netpbmopenSUSE:Tumbleweed From an advisory covering 7 CVEs |
before 11.16.1-2.1 | 11.16.1-2.1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, aliases, references | OSV | |
| affected, aliases, references | OSV | |
| affected, aliases, facts, references | EUVD, NVD, OSV | |
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-120436 is a high vulnerability (CVSS 8.5) in Netpbm, published November 2, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.18%, the 7th percentile. No source names a fixed version.
References
sourceforge.net/p/netpbm/code/5324
svn.code.sf.net/p/netpbm/code/!svn/bc/5358/stable/doc/HISTORY
vulncheck.com/advisories/netpbm-before-10.86.51-11.02.30-and-11.15.08-heap-overflow-via-jbigtopnm
Show 12 moreShow less
nvd.nist.gov/vuln/detail/CVE-2026-120436
github.com/advisories/GHSA-wj4q-h4hq-8gh7
security-tracker.debian.org/tracker/CVE-2026-120436
ubuntu.com/security/CVE-2026-120436
cve.org/CVERecord?id=CVE-2026-120436
suse.com/security/cve/CVE-2026-120431