CVE-2025-14933 | NSF Unidata NetCDF-C NC Variable Integer Overflow Remote Code Execution Vulnerability

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.

Published: 2025-12-23 Last update: 2026-01-13 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2025-14933 is rated Low Risk (34.1/100): CVSS High severity, with low exploitation likelihood (EPSS 0.03%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2025-14933

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-02-18 0.05% 0.03% -0.02%
2 2025-12-29 0.05% 0.05% +0.00%
3 2025-12-24 — 0.05% —

Full EPSS history (3 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2025-14933

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.8 3.0 HIGH
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.8 5.9 [email protected]

Weakness enumeration for CVE-2025-14933

OS Trackers for CVE-2025-14933

vendor priority summary link
debian not yet assigned CVE-2025-14933 not yet assigned priority: Debian including 2 source packages (netcdf, netcdf-parallel), 10 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): open 10. https://security-tracker.debian.org/tracker/CVE-2025-14933
ubuntu medium CVE-2025-14933 medium priority: Ubuntu including 2 source packages (netcdf, netcdf-parallel), 15 status rows across 9 suites (bionic, focal, jammy, noble, plucky, questing, trusty, upstream, xenial): deferred 11, ignored 2, needed 2. https://ubuntu.com/security/CVE-2025-14933

Affected software / configurations for CVE-2025-14933

Vendor Product Version Raw CPE
unidata netcdf — cpe:2.3:a:unidata:netcdf:-:*:*:*:*:*:*:*

References for CVE-2025-14933

cvelogic Threat Intelligence