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CVE-2025-15537

23
FAUCET Score

CVE-2025-15537 is a heap-based buffer overflow vulnerability in Mapnik up to version 4.2.0, specifically within the mapnik::dbf_file::string_value function in plugins/input/shape/dbfile.cpp. This flaw allows for a local attack, potentially leading to a denial of service (CVSS 5.5 Medium). While there is no known active exploitation or publicly available exploit code in Metasploit, Nuclei, or ExploitDB, the exploit has been publicly disclosed, and the vulnerability has garnered significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
<= 4.2.0CPE matchmatch criteria
cpe:2.3:a:mapnik:mapnik:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 4.0

1.9LOW

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector
LOCAL
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
VS Confidentiality
LOW
VS Integrity
LOW
VS Availability
LOW
SS Confidentiality
NONE
SS Integrity
NONE
SS Availability
NONE
Exploit Maturity
PROOF_OF_CONCEPT
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.19%
Probability of exploitation in next 30 days
EPSS Percentile
8.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0019 is in the 45th percentile among its peer group of 15,937 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

github_advisoryvendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2025-15537Moderate

mapnik: Mapnik: Heap-based buffer overflow via string_value function manipulation

Jan 18, 2026

References

github.com / mapnik/mapnik
github.com / mapnik/mapnik/issues/4543
ExploitIssue TrackingVendor Advisory
github.com / oneafter/1218/blob/main/repro
Product
vuldb.com
Permissions RequiredVDB Entry
vuldb.com
Third Party AdvisoryVDB Entry
vuldb.com
ExploitThird Party AdvisoryVDB Entry