CVE-2026-120434
Netpbm before 10.86.51, 11.02.30, and 11.15.08 picttoppm Stack Overflow via scanPoly
Netpbm before 10.86.51, 11.x before 11.02.30, and 11.03 before 11.15.08 contains a stack-based buffer overflow in picttoppm's scanPoly() function in converter/ppm/picttoppm.c. Attackers can supply a crafted PICT file whose polygon edges produce more than 5000 points, overflowing the coord stack array to crash the converter or potentially execute code.
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 picttoppm Stack Overflow via scanPoly
Netpbm before 10.86.51, 11.x before 11.02.30, and 11.03 before 11.15.08 contains a stack-based buffer overflow in picttoppm's scanPoly() function in converter/ppm/picttoppm.c. Attackers can supply a crafted PICT file whose polygon edges produce more than 5000 points, overflowing the coord stack array to crash the converter or potentially execute code.
- Record
CVE-2026-120434- 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-121
- Updated
- 2026-11-05
EUVDEUVD-2026-115194
Netpbm before 10.86.51, 11.x before 11.02.30, and 11.03 before 11.15.08 contains a stack-based buffer overflow in picttoppm's scanPoly() function in converter/ppm/picttoppm.c. Attackers can supply a crafted PICT file whose polygon edges produce more than 5000 points, overflowing the coord stack array to crash the converter or potentially execute code.
- Record
EUVD-2026-115194- 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
- 2026-11-05
GitHub AdvisoriesGHSA-vm8g-xfgm-cjmm
Netpbm before 10.86.51, 11.x before 11.02.30, and 11.03 before 11.15.08 contains a stack-based...
Netpbm before 10.86.51, 11.x before 11.02.30, and 11.03 before 11.15.08 contains a stack-based buffer overflow in picttoppm's scanPoly() function in converter/ppm/picttoppm.c. Attackers can supply a crafted PICT file whose polygon edges produce more than 5000 points, overflowing the coord stack array to crash the converter or potentially execute code.
- Record
GHSA-vm8g-xfgm-cjmm- 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-121
- Updated
- 2026-11-02
NVD
Netpbm before 10.86.51, 11.x before 11.02.30, and 11.03 before 11.15.08 contains a stack-based buffer overflow in picttoppm's scanPoly() function in converter/ppm/picttoppm.c. Attackers can supply a crafted PICT file whose polygon edges produce more than 5000 points, overflowing the coord stack array to crash the converter or potentially execute code.
- Record
CVE-2026-120434- 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-121
- Updated
- 2026-11-05
OSVDEBIAN-CVE-2026-120434
Netpbm before 10.86.51, 11.x before 11.02.30, and 11.03 before 11.15.08 contains a stack-based buffer overflow in picttoppm's scanPoly() function in converter/ppm/picttoppm.c. Attackers can supply a crafted PICT file whose polygon edges produce more than 5000 points, overflowing the coord stack array to crash the converter or potentially execute code.
- Record
DEBIAN-CVE-2026-120434- 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
- 2026-11-06
OSVUBUNTU-CVE-2026-120434
Netpbm before 10.86.51, 11.x before 11.02.30, and 11.03 before 11.15.08 contains a stack-based buffer overflow in picttoppm's scanPoly() function in converter/ppm/picttoppm.c. Attackers can supply a crafted PICT file whose polygon edges produce more than 5000 points, overflowing the coord stack array to crash the converter or potentially execute code.
- Record
UBUNTU-CVE-2026-120434- 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 | CVE List, EUVD, NVD, 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-2026-120434 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 0.15%, the 4th percentile. No source names a fixed version.
References
sourceforge.net/p/netpbm/code/5331
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-picttoppm-stack-overflow-via-scanpoly
Show 12 moreShow less
nvd.nist.gov/vuln/detail/CVE-2026-120434
github.com/advisories/GHSA-vm8g-xfgm-cjmm
security-tracker.debian.org/tracker/CVE-2026-120434
ubuntu.com/security/CVE-2026-120434
cve.org/CVERecord?id=CVE-2026-120434
suse.com/security/cve/CVE-2026-120431