Code execution via unchecked variable-name copy
Published Dec 23, 2025 · Updated Dec 23, 2025
Stack-based buffer overflow in Unidata NetCDF-C allows context-dependent attackers to execute code via a malicious netCDF file. Variable-name parsing copies attacker-controlled data into a fixed-length stack buffer without first validating its length. Exploitation requires a target user to open the file or visit malicious content, and successful code runs in that user's context.
Summary
What happened
Stack-based buffer overflow in Unidata NetCDF-C allows context-dependent attackers to execute code via a malicious netCDF file. Variable-name parsing copies attacker-controlled data into a fixed-length stack buffer without first validating its length. Exploitation requires a target user to open the file or visit malicious content, and successful code runs in that user's context.
The record
- CVE
- CVE-2025-14934
- Published
- Dec 23, 2025
- Updated
- Dec 23, 2025
- Vendor
- Unidata
- Product
- NetCDF-C
- Classifications
- CWE-121, CWE-787, T1203, T1204.002
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Dec 23, 2025CVE publishedPublication date reported by the CVE source.
- Dec 23, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=dbe0cbb9ff3f706009cf4ee011adf3e58d8a81c1
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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