Vulnerability · Published Jan 18, 2026 · Assigned by VulDB
CVE-2025-15537Mapnik dbfile.cpp string_value heap-based overflow
Medium 5.3
In plain English
A medium-severity heap buffer overflow in Mapnik. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 13% of all known vulnerabilities).
Official description
A security vulnerability has been detected in Mapnik up to 4.2.0. This issue affects the function mapnik::dbf_file::string_value of the file plugins/input/shape/dbfile.cpp. Such manipulation leads to heap-based buffer overflow. The attack must be carried out locally. The exploit has been disclosed publicly and may be used. The project was informed of the problem early through an issue report but has not responded yet.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | mapnik | no fix listed | DEBIAN-CVE-2025-15537 |
| Debian:13 | mapnik | no fix listed | DEBIAN-CVE-2025-15537 |
| Debian:14 | mapnik | no fix listed | DEBIAN-CVE-2025-15537 |
| Ubuntu:22.04:LTS | mapnik | no fix listed | UBUNTU-CVE-2025-15537 |
| Ubuntu:24.04:LTS | mapnik | no fix listed | UBUNTU-CVE-2025-15537 |
| Ubuntu:25.10 | mapnik | no fix listed | UBUNTU-CVE-2025-15537 |
| Ubuntu:26.04:LTS | mapnik | no fix listed | UBUNTU-CVE-2025-15537 |
| Ubuntu:26.10 | mapnik | no fix listed | UBUNTU-CVE-2025-15537 |
Affected products (as reported)
Weakness: CWE-122, CWE-119 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
References
- VDB-341709 | Mapnik dbfile.cpp string_value heap-based overflow vdb-entry, technical-description
- VDB-341709 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
- Submit #733348 | mapnik Mapnik v4.2.0 and master-branch Heap-based Buffer Overflow third-party-advisory
- https://github.com/mapnik/mapnik/issues/4543 issue-tracking
- https://github.com/oneafter/1218/blob/main/repro exploit
- https://github.com/mapnik/mapnik/ product