Is CVE-2026-120433 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-120433 being exploited in the wild.

How severe is CVE-2026-120433?

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-2026-120433?

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-2026-120433 attacked?

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

Am I affected by CVE-2026-120433?

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-2026-120433: Netpbm stack buffer overflow in picttoppm paintPoly

CVE-2026-120433 · Severity: high · CVSS 7.8 · Published 2026-11-02

Netpbm is a suite of image conversion and graphics manipulation tools used to translate between different image formats. A stack-based buffer overflow in the picttoppm converter allows attackers to crash the application or potentially execute arbitrary code by supplying a specially crafted PICT image file with an oversized polygon.

Technologies: Netpbm. Vendors: Netpbm.

Quick answers

Is CVE-2026-120433 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-120433 being exploited in the wild.
How severe is CVE-2026-120433?: 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-2026-120433?: 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-2026-120433 attacked?: It is attacked with local access, in a software library.
Am I affected by CVE-2026-120433?: 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

The picttoppm paintPoly() function fails to validate the polygon point count before writing to a fixed-size stack array, allowing a crafted PICT file with a polygon exceeding 100 points to overwrite the pts array. The vulnerability is triggered when processing a malicious PICT file, requiring no authentication or user interaction beyond opening the file. An attacker can achieve denial of service or code execution depending on the overwritten stack contents.

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: CVE-2026-120433 published
2026-09-09: patched: Fix committed to repository (commit r5328)

References

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