# CVE-2025-15564: mapnik: A vulnerability has been found in Mapnik up to 4.2.0

CVE-2025-15564 is fixed in mapnik on 1 platform by DEBIAN-CVE-2025-15564 (version 4.2.1+ds-2), released February 7, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2025-15564
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0023
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Feb 7, 2026

## Description

A vulnerability has been found in Mapnik up to 4.2.0. This vulnerability affects the function mapnik::detail::mod<...>::operator of the file src/value.cpp. The manipulation leads to divide by zero. The attack needs to be performed locally. The exploit has been disclosed to the public and may be used. The project was informed of the problem early through an issue report but has not responded yet.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | mapnik Debian 14 | 4.2.1+ds-2 | [DEBIAN-CVE-2025-15564](https://patchblox.com/security/data/fix/linux/debian-cve-2025-15564.md) | Feb 7, 2026 |

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Data as of 2026-11-08T06:59:42Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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