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CVE-2026-120435

Netpbm before 10.86.51, 11.02.30, and 11.15.08 Heap Overflow in xpmtoppm

8.5 High

Netpbm before 10.86.51, 11.x before 11.02.30, and 11.03 before 11.15.08 contains a heap buffer overflow in xpmtoppm caused by an unvalidated characters-per-pixel value in the XPM header. Attackers can supply a crafted XPM file with characters-per-pixel greater than 3 to overrun fixed 3-byte colorName hash entries, 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

0.15%Unchanged since Nov 3, 2026
90%50%10%1%

What each source reports

CVE List Score used 8.5

Netpbm before 10.86.51, 11.02.30, and 11.15.08 Heap Overflow in xpmtoppm

Netpbm before 10.86.51, 11.x before 11.02.30, and 11.03 before 11.15.08 contains a heap buffer overflow in xpmtoppm caused by an unvalidated characters-per-pixel value in the XPM header. Attackers can supply a crafted XPM file with characters-per-pixel greater than 3 to overrun fixed 3-byte colorName hash entries, causing crashes or potentially code execution.

Record
CVE-2026-120435
CVSS 4.0
8.5 HighCVSS: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 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness
CWE-787
Updated
2026-11-06
EUVDEUVD-2026-115195 8.5

Netpbm before 10.86.51, 11.x before 11.02.30, and 11.03 before 11.15.08 contains a heap buffer overflow in xpmtoppm caused by an unvalidated characters-per-pixel value in the XPM header. Attackers can supply a crafted XPM file with characters-per-pixel greater than 3 to overrun fixed 3-byte colorName hash entries, causing crashes or potentially code execution.

Record
EUVD-2026-115195
CVSS 4.0
8.5 HighCVSS: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
2026-11-06
GitHub AdvisoriesGHSA-9wp8-mmj7-87m8 8.5

Netpbm before 10.86.51, 11.x before 11.02.30, and 11.03 before 11.15.08 contains a heap buffer...

Netpbm before 10.86.51, 11.x before 11.02.30, and 11.03 before 11.15.08 contains a heap buffer overflow in xpmtoppm caused by an unvalidated characters-per-pixel value in the XPM header. Attackers can supply a crafted XPM file with characters-per-pixel greater than 3 to overrun fixed 3-byte colorName hash entries, causing crashes or potentially code execution.

Record
GHSA-9wp8-mmj7-87m8
CVSS 4.0
8.5 HighCVSS: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 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness
CWE-787
Updated
2026-11-02
NVD 8.5

Netpbm before 10.86.51, 11.x before 11.02.30, and 11.03 before 11.15.08 contains a heap buffer overflow in xpmtoppm caused by an unvalidated characters-per-pixel value in the XPM header. Attackers can supply a crafted XPM file with characters-per-pixel greater than 3 to overrun fixed 3-byte colorName hash entries, causing crashes or potentially code execution.

Record
CVE-2026-120435
CVSS 4.0
8.5 HighCVSS: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 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness
CWE-787
Updated
2026-11-06
OSVDEBIAN-CVE-2026-120435 8.5

Netpbm before 10.86.51, 11.x before 11.02.30, and 11.03 before 11.15.08 contains a heap buffer overflow in xpmtoppm caused by an unvalidated characters-per-pixel value in the XPM header. Attackers can supply a crafted XPM file with characters-per-pixel greater than 3 to overrun fixed 3-byte colorName hash entries, causing crashes or potentially code execution.

Record
DEBIAN-CVE-2026-120435
CVSS 4.0
8.5 HighCVSS: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
2026-11-07
OSVUBUNTU-CVE-2026-120435 8.5

Netpbm before 10.86.51, 11.x before 11.02.30, and 11.03 before 11.15.08 contains a heap buffer overflow in xpmtoppm caused by an unvalidated characters-per-pixel value in the XPM header. Attackers can supply a crafted XPM file with characters-per-pixel greater than 3 to overrun fixed 3-byte colorName hash entries, causing crashes or potentially code execution.

Record
UBUNTU-CVE-2026-120435
CVSS 4.0
8.5 HighCVSS: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 HighCVSS: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

Affected packages
PackageAffectedFixed
netpbm-free
Debian: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 less
2:11.04.05-12:11.04.05-22:11.05.01-12:11.05.01-22:11.05.01-32:11.05.02-12:11.05.02-1.12:11.05.02-1.1~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-free
Debian: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 less
2:11.13.00-12:11.13.00-22:11.13.00-32:11.13.03+ds-12:11.13.03+ds-22:11.13.03-12:11.15.04+ds-1
 None known
netpbm-free
Debian: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 less
2:11.13.00-12:11.13.00-22:11.13.00-32:11.13.03+ds-12:11.13.03+ds-22:11.13.03-12:11.15.04+ds-1
 None known
netpbm-free
Ubuntu:16.04:LTS
 All versions, plus listed versions
2:10.0-15.22:10.0-15.3
 None known
netpbm-free
Ubuntu:18.04:LTS
 All versions, plus listed versions
2:10.0-15.3build1
 None known
netpbm-free
Ubuntu:20.04:LTS
 All versions, plus listed versions
2:10.0-15.3build1
 None known
netpbm-free
Ubuntu:22.04:LTS
 All versions, plus listed versions
2:10.0-15.4
 None known
netpbm-free
Ubuntu: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-free
Ubuntu:26.10
 All versions, plus listed versions
2:11.10.02-1build12:11.13.03+ds-2
 None known
netpbm-free
Ubuntu:26.04:LTS
 All versions, plus listed versions
2:11.10.02-1build1
 None known
netpbm
openSUSE:Tumbleweed
From an advisory covering 7 CVEs
 before 11.16.1-2.1
11.16.1-2.1

History

History
RecordedChangedSources
affected, aliases, referencesCVE List, EUVD, NVD, OSV
affected, aliases, referencesOSV
affected, aliases, facts, referencesEUVD, NVD, OSV
first indexedCVE List, EUVD, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-120435 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

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