Netpbm up to 10.86.50/11.02.29/11.15.7 PICT file picttoppm.c scanPoly buffer overflow

Summaryinfo

A vulnerability was found in Netpbm up to 10.86.50/11.02.29/11.15.7. It has been rated as problematic. This affects the function scanPoly of the file converter/ppm/picttoppm.c of the component PICT file Handler. Performing a manipulation results in buffer overflow. This vulnerability is cataloged as CVE-2026-120434. The attack must be initiated from a local position. There is no exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability classified as problematic has been found in Netpbm up to 10.86.50/11.02.29/11.15.7. This affects the function scanPoly of the file converter/ppm/picttoppm.c of the component PICT file Handler. The manipulation with an unknown input leads to a buffer overflow vulnerability. CWE is classifying the issue as CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

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.

The advisory is shared at sourceforge.net. This vulnerability is uniquely identified as CVE-2026-120434 since 11/02/2026. The exploitability is told to be easy. An attack has to be approached locally. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available.

Upgrading to version 10.86.51, 11.02.30 or 11.15.08 eliminates this vulnerability.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Name

• Netpbm

Version

• 10.86.0
• 10.86.1
• 10.86.2
• 10.86.3
• 10.86.4
• 10.86.5
• 10.86.6
• 10.86.7
• 10.86.8
• 10.86.9
• 10.86.10
• 10.86.11
• 10.86.12
• 10.86.13
• 10.86.14
• 10.86.15
• 10.86.16
• 10.86.17
• 10.86.18
• 10.86.19
• 10.86.20
• 10.86.21
• 10.86.22
• 10.86.23
• 10.86.24
• 10.86.25
• 10.86.26
• 10.86.27
• 10.86.28
• 10.86.29
• 10.86.30
• 10.86.31
• 10.86.32
• 10.86.33
• 10.86.34
• 10.86.35
• 10.86.36
• 10.86.37
• 10.86.38
• 10.86.39
• 10.86.40
• 10.86.41
• 10.86.42
• 10.86.43
• 10.86.44
• 10.86.45
• 10.86.46
• 10.86.47
• 10.86.48
• 10.86.49
• 10.86.50
• 11.02.0
• 11.02.1
• 11.02.2
• 11.02.3
• 11.02.4
• 11.02.5
• 11.02.6
• 11.02.7
• 11.02.8
• 11.02.9
• 11.02.10
• 11.02.11
• 11.02.12
• 11.02.13
• 11.02.14
• 11.02.15
• 11.02.16
• 11.02.17
• 11.02.18
• 11.02.19
• 11.02.20
• 11.02.21
• 11.02.22
• 11.02.23
• 11.02.24
• 11.02.25
• 11.02.26
• 11.02.27
• 11.02.28
• 11.02.29
• 11.15.0
• 11.15.1
• 11.15.2
• 11.15.3
• 11.15.4
• 11.15.5
• 11.15.6
• 11.15.7

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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