CVE-2026-120434
7.8, highNetpbm Stack-based Buffer Overflow Vulnerability
- CVSS
- 7.8, high high CVSS v3.1
- EPSS, next 30 days
- n/a
- Exploitation
- No public evidence
- Published
- 2 Nov 2026yesterday
Description
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.
Details
- Vendor
- Netpbm
- Product
- Netpbm
- Weakness
- CWE-121 (opens in a new tab)
- Status
- Awaiting analysis
- Updated
- 2 Nov 2026
- Assigner
- disclosure@vulncheck.com
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
References 6
Other references 6
- sourceforge.net /p/netpbm/code/5331/ (opens in a new tab)
- svn.code.sf.net /p/netpbm/code/!svn/bc/5330/trunk/converter/ppm/picttoppm.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-picttoppm-stack-overflow-via-scanpoly (opens in a new tab)
The kind is read from NVD's tags where present and from the shape of the URL otherwise, so treat it as a hint.
Other Netpbm CVEs
Every Netpbm CVE we holdSame vendor in what we hold, not a known link between the flaws.
- CVE-2026-120431 Netpbm Heap-based Buffer Overflow Vulnerability 7.8, high
- CVE-2026-120435 Netpbm Out-of-Bounds Write Vulnerability 7.8, high
Beyond this page
Is CVE-2026-120434 in your network?
This page tells you how dangerous CVE-2026-120434 is out there. Whether it sits on one of your devices, only a scan of your own network can tell. That is what our systems do, every day, for the companies we protect.
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Until the patch is applied, Kondra monitors your network, events and endpoints in real time. It keeps an inventory of the software installed on every endpoint, and its anomaly detection rules flag what an attacker does once inside.
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Assembled from the NVD 2.0 API, the CISA Known Exploited Vulnerabilities Catalog and FIRST EPSS. Scores are as of our last collection on 3 Nov 2026, not the live upstream state.