CVE-2025-15564Public exploitHinoki check available

Local process crash via unchecked modulo divisor

Published Feb 7, 2026 · Updated Feb 7, 2026

Divide-by-zero in Mapnik 4.0 through 4.2.0 allows local users to crash a consuming process via a crafted XML map style. The mapnik::detail::mod operator in src/value.cpp applies integer modulo without checking whether the evaluated second operand is zero. The user must cause an application linked to Mapnik to parse the style; the resulting SIGFPE terminates that process.

CVSS severity5.5
Medium
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
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Summary

What happened

Divide-by-zero in Mapnik 4.0 through 4.2.0 allows local users to crash a consuming process via a crafted XML map style. The mapnik::detail::mod operator in src/value.cpp applies integer modulo without checking whether the evaluated second operand is zero. The user must cause an application linked to Mapnik to parse the style; the resulting SIGFPE terminates that process.

The record

CVE
CVE-2025-15564
Published
Feb 7, 2026
Updated
Feb 7, 2026
Vendor
Mapnik
Product
Mapnik
Classifications
CWE-404, CWE-369, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 7, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 7, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=4.0
  2. Affected versionversion=4.1
  3. Affected versionversion=4.2.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Mapnik · Mapnikversion=4.0; version=4.1; version=4.2.0

Published CVSS scores

1.9VulDBCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
1.7VulDBAV:L/AC:L/Au:S/C:N/I:N/A:P
3.3VulDBCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-404Improper Resource Shutdown or Release
CWE-369Divide By Zero
T1499Endpoint Denial of Service

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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