# CVE-2025-14933: netcdf-parallel: NSF Unidata NetCDF-C NC Variable Integer Overflow Remote Code Execution Vulnerability

CVE-2025-14933 is fixed in 2 products on 1 platform, first by DEBIAN-CVE-2025-14933, released December 23, 2025. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2025-14933
- Priority: High
- CVSS: 7.8 (high)
- EPSS: 0.0036
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Dec 23, 2025

## Description

NSF Unidata NetCDF-C NC Variable Integer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of NSF Unidata NetCDF-C. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.  The specific flaw exists within the parsing of NC variables. The issue results from the lack of proper validation of user-supplied data, which can result in an integer overflow before allocating a buffer. An attacker can leverage this vulnerability to execute code in the context of the current user. Was ZDI-CAN-27266.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | netcdf Debian 14 | 1:4.10.1-1 | [DEBIAN-CVE-2025-14933](https://patchblox.com/security/data/fix/linux/debian-cve-2025-14933.md) | Dec 23, 2025 |
| Linux | netcdf-parallel Debian 14 | 1:4.10.1-1 | [DEBIAN-CVE-2025-14933](https://patchblox.com/security/data/fix/linux/debian-cve-2025-14933.md) | Dec 23, 2025 |

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Data as of 2026-11-08T06:59:42Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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