How severe is CVE-2025-14935?

CVE-2025-14935 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-2025-14935 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-14935?

CVE-2025-14935 affects Unidata Netcdf. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-14935?

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-2025-14935 have an EU (EUVD) identifier?

Yes. CVE-2025-14935 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-204811.

When was CVE-2025-14935 published?

CVE-2025-14935 was published on 2025-12-23 and last updated on 2026-06-17.

CVE-2025-14935

CVE-2025-14935 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-787.

Key facts

Severity: High (CVSS 3.x base score 7.8)
EPSS exploit prediction: 0% (22nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-204811
Weakness: CWE-787
Affected product: Unidata Netcdf
Published: 2025-12-23
Last modified: 2026-06-17

Description

NSF Unidata NetCDF-C Dimension Name Heap-based Buffer 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 dimension names. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current user. Was ZDI-CAN-27168.

Frequently asked questions

What is CVE-2025-14935?: NSF Unidata NetCDF-C Dimension Name Heap-based Buffer 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 dimension names. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current user. Was ZDI-CAN-27168.
How severe is CVE-2025-14935?: CVE-2025-14935 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-2025-14935 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-14935?: CVE-2025-14935 affects Unidata Netcdf. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-14935?: 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-2025-14935 have an EU (EUVD) identifier?: Yes. CVE-2025-14935 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-204811.
When was CVE-2025-14935 published?: CVE-2025-14935 was published on 2025-12-23 and last updated on 2026-06-17.

References

https://www.zerodayinitiative.com/advisories/ZDI-25-1154/

Affected products (1)

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

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