CVE-2026-33147: GMT is an open source collection of command-line tools for manipulating geographic and Cartesian data sets

Q: How do I fix CVE-2026-33147?

gmt: upgrade to newer than 6.6.0. Exact commands for each OS are on this page.

Q: Is CVE-2026-33147 being exploited?

CVE-2026-33147 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-2026-33147 affect?

CVE-2026-33147 affects gmt. Severity is high (CVSS 7.3). 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 w

Q: How urgent is CVE-2026-33147?

Priority 33/100. High severity; Public exploit reference

Routine

HIGH 7.3UPGRADE

CVE-2026-33147 is a high-severity flaw (CVSS 7.3) affecting gmt. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 within src/gmt_remote.c. This issue occurs when a specially crafted long string is passed as a dataset identifier (e.g., via the which module), leading to a crash or potential arbitrary code execution. This issu

Why this priority

High severity
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	7.3 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.2% (top 91%)
CISA exploited list	No
Weakness	CWE-121
Published	2026-03-20
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: generic-mapping-tools

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

Am I affected?

Timeline

2026-03-20 21:17 UTCPublished CVE record published
2026-06-17 10:37 UTCUpdated Record last modified

generic-mapping-tools gmt UPGRADE

Affected: <= 6.6.0

Fixed in: newer than 6.6.0

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 6.6.0 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade gmt

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-2026-33147?

gmt: upgrade to newer than 6.6.0. Exact commands for each OS are on this page.

Is CVE-2026-33147 being exploited?

CVE-2026-33147 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-2026-33147 affect?

CVE-2026-33147 affects gmt. Severity is high (CVSS 7.3). 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 w

How urgent is CVE-2026-33147?

Priority 33/100. High severity; Public exploit reference

References

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