CVE-2025-14933

Code execution via overflowing NC variable dimension allocation

Published Dec 23, 2025 · Updated Dec 23, 2025

Integer overflow in NC variable parsing in Unidata NetCDF-C allows remote attackers to execute code through a crafted netCDF file. The v1h_get_NC_var path passes an unbounded dimension count to new_x_NC_var, whose allocation-size additions can wrap before memory allocation. Opening the file is required, and successful exploitation runs code with the current user's privileges.

CVSS severity7.8
High
EPSS probability0.36%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Integer overflow in NC variable parsing in Unidata NetCDF-C allows remote attackers to execute code through a crafted netCDF file. The v1h_get_NC_var path passes an unbounded dimension count to new_x_NC_var, whose allocation-size additions can wrap before memory allocation. Opening the file is required, and successful exploitation runs code with the current user's privileges.

The record

CVE
CVE-2025-14933
Published
Dec 23, 2025
Updated
Dec 23, 2025
Vendor
Unidata
Product
NetCDF-C
Classifications
CWE-190, T1204.002, T1203
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 23, 2025CVE publishedPublication date reported by the CVE source.
  2. 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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  1. Affected versionversion=dbe0cbb9ff3f706009cf4ee011adf3e58d8a81c1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Unidata · NetCDF-Cversion=dbe0cbb9ff3f706009cf4ee011adf3e58d8a81c1

Published CVSS scores

7.8Zero Day InitiativeCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-190Integer Overflow or Wraparound
T1204.002Malicious File
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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