Stack-based Buffer Overflow in GMT Command-line Tools Affecting Geographic Data Manipulation
CVE-2026-33147

7.3HIGH

Key Information:

Vendor

Genericmappingtools

Status
Gmt
Vendor
CVE Published:
20 March 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-33147?

A stack-based buffer overflow has been identified in the gmt_remote_dataset_id function within the GMT command-line tools, specifically versions 6.6.0 and earlier. This vulnerability arises when a specifically crafted long string is provided as a dataset identifier through the which module, potentially leading to crashes or allowing for arbitrary code execution. Users are encouraged to upgrade to the patched version to mitigate the risk associated with this issue.

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Deploy the Patch

Affected Version(s)

gmt <= 6.6.0

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-33147
Created by redyank

References

https://github.com/GenericMappingTools/gmt/security/advis...
x_refsource_CONFIRM
https://github.com/GenericMappingTools/gmt/commit/0ad2b49...
x_refsource_MISC

CVSS V3.1

Score:
7.3
Severity:
HIGH
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

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