CVE-2025-15537: A security vulnerability has been detected in Mapnik up to 4.2.0

Q: How do I fix CVE-2025-15537?

mapnik: upgrade to newer than 4.2.0. Exact commands for each OS are on this page.

Q: Is CVE-2025-15537 being exploited?

CVE-2025-15537 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2025-15537 affect?

CVE-2025-15537 affects mapnik. Severity is medium (CVSS 5.3). 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 m

Q: How urgent is CVE-2025-15537?

Priority 27/100. Public exploit reference

Routine

MEDIUM 5.3UPGRADE

CVE-2025-15537 is a medium-severity flaw (CVSS 5.3) affecting mapnik. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	5.3 (Medium)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.2% (top 87%)
CISA exploited list	No
Weakness	CWE-119, CWE-122, CWE-787
Published	2026-01-18
Last modified	2026-06-17

Publisher (CNA): VulDB · Vendor: mapnik

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-01-18 10:15 UTCPublished CVE record published
2026-06-17 08:37 UTCUpdated Record last modified

mapnik mapnik UPGRADE

Affected: <= 4.2.0

Fixed in: newer than 4.2.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy mapnik || rpm -q mapnik || mapnik --version

2. UPGRADE to newer than 4.2.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade mapnik

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade mapnik

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-15537?

mapnik: upgrade to newer than 4.2.0. Exact commands for each OS are on this page.

Is CVE-2025-15537 being exploited?

CVE-2025-15537 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-15537 affect?

CVE-2025-15537 affects mapnik. Severity is medium (CVSS 5.3). 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 m

How urgent is CVE-2025-15537?

Priority 27/100. Public exploit reference

Related CVEs

CVE-2025-15564 LOW 3.3 UPGRADE A vulnerability has been found in Mapnik up to 4.2.0

References

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