How severe is CVE-2025-14933?

CVE-2025-14933 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-14933 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-14933?

CVE-2025-14933 affects Unidata Netcdf. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-14933?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2025-14933 have an EU (EUVD) identifier?

Yes. CVE-2025-14933 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-204813.

When was CVE-2025-14933 published?

CVE-2025-14933 was published on 2025-12-23 and last updated on 2026-06-17.

CVE-2025-14933

CVE-2025-14933 is a high-severity vulnerability in Unidata Netcdf with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-190.

Key facts

Severity: High (CVSS 3.x base score 7.8)
EPSS exploit prediction: 0% (23rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-204813
Weakness: CWE-190
Affected product: Unidata Netcdf
Published: 2025-12-23
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2025-14933?: 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.
How severe is CVE-2025-14933?: CVE-2025-14933 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-14933 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-14933?: CVE-2025-14933 affects Unidata Netcdf. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-14933?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-14933 have an EU (EUVD) identifier?: Yes. CVE-2025-14933 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-204813.
When was CVE-2025-14933 published?: CVE-2025-14933 was published on 2025-12-23 and last updated on 2026-06-17.

References

https://www.zerodayinitiative.com/advisories/ZDI-25-1151/

Affected products (1)

cpe:2.3:a:unidata:netcdf:-:*:*:*:*:*:*:*

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