Is CVE-2026-120434 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-120434 being exploited in the wild.

How severe is CVE-2026-120434?

High severity, with a CVSS score of 7.8, published 2 November 2026.

Which products and versions are affected?

Netpbm before 10.86.51, 11.x before 11.02.30, 11.03 before 11.15.08.

Is there a fix for CVE-2026-120434?

Yes: fixed in 10.86.51, 11.02.30, 11.15.08. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-120434 attacked?

It is attacked with local access, in a software library.

Am I affected by CVE-2026-120434?

Check whether you run Netpbm at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-120434: Netpbm stack buffer overflow in picttoppm scanPoly()

CVE-2026-120434 · Severity: high · CVSS 7.8 · Published 2026-11-02

Netpbm is a suite of graphics conversion tools. A stack buffer overflow in the picttoppm converter allows an attacker to crash the application or potentially execute arbitrary code by providing a specially crafted PICT image file with polygon edges exceeding the internal buffer limit.

Technologies: Netpbm. Vendors: Netpbm.

Quick answers

Is CVE-2026-120434 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-120434 being exploited in the wild.
How severe is CVE-2026-120434?: High severity, with a CVSS score of 7.8, published 2 November 2026.
Which products and versions are affected?: Netpbm before 10.86.51, 11.x before 11.02.30, 11.03 before 11.15.08.
Is there a fix for CVE-2026-120434?: Yes: fixed in 10.86.51, 11.02.30, 11.15.08. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-120434 attacked?: It is attacked with local access, in a software library.
Am I affected by CVE-2026-120434?: Check whether you run Netpbm at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

Fixed in: 10.86.51, 11.02.30, 11.15.08

Technical details

A stack-based buffer overflow exists in the scanPoly() function within picttoppm.c when processing PICT files. Polygon edges in the crafted PICT file can produce more than 5000 points, overflowing the fixed-size coord stack array. This is exploitable through a local or network vector if the file is processed automatically, allowing denial of service or code execution.

Affected products

Netpbm Netpbm before 10.86.51, 11.x before 11.02.30, 11.03 before 11.15.08

Timeline

2026-11-02: disclosed

References

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