What is CVE-2026-33147?

CVE-2026-33147 is a high-severity vulnerability in Genericmappingtools Gmt, classified under Stack-based Buffer Overflow. CVSS score: 7.3/10. Published 2026-03-20.

How severe is CVE-2026-33147?

High severity. CVSS v3 base score is 7.3 out of 10.

Is CVE-2026-33147 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Buffer overflow in Genericmappingtools Gmt

CVE-2026-33147

GMT is an open source collection of command-line tools for manipulating geographic and Cartesian data sets. In versions from 6.6.0 and prior, a stack-based buffer overflow vulnerability was identified in the gmt_remote_dataset_id function…

Vulnerability class: Buffer Overflow

EPSS: 0.000 (5.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H.

Affected products

Genericmappingtools Gmt — versions <= 6.6.0

Weakness classification (CWE)

CWE-121 — Stack-based Buffer Overflow

Public proof-of-concept exploits

redyank/CVE-2026-33147

References

https://github.com/GenericMappingTools/gmt/security/advisories/GHSA-fqxx-62x7-9gwg (x_refsource_CONFIRM)
https://github.com/GenericMappingTools/gmt/commit/0ad2b491470df82c9ec1139dcbd70502fa28a082 (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-33147?: CVE-2026-33147 is a high-severity vulnerability in Genericmappingtools Gmt, classified under Stack-based Buffer Overflow. CVSS score: 7.3/10. Published 2026-03-20.
How severe is CVE-2026-33147?: High severity. CVSS v3 base score is 7.3 out of 10.
Is CVE-2026-33147 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.