Raw vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HCVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.
Summary
CVE-2026-30278 is a critical-severity Path Traversal (CWE-22) vulnerability in Funair Fly Is Fun. Its CVSS base score is 9.8 (Critical).
Operationally, exploitation aligns with the MITRE ATT&CK technique /etc/passwd and /etc/shadow (T1003.008); ranked in the top 45% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified map to AC-3 (Access Enforcement) and SI-10 (Information Input Validation) — see the control section below for these in your framework.
Deeper analysis AI-assisted summary
Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.
CVE-2026-30278 is an arbitrary file overwrite vulnerability in FLY is FUN Aviation Navigation version 35.33. The issue, tied to CWE-22 (path traversal), occurs in the file import process, enabling attackers to overwrite critical internal files. This can result in arbitrary code execution or information exposure. Published on 2026-03-31, it carries a CVSS v3.1 base score of 9.8 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H), marking it as critical.
Unauthenticated remote attackers can exploit the vulnerability over the network with low attack complexity and no user interaction required. By manipulating the file import mechanism, they can target and overwrite essential system files, achieving arbitrary code execution to gain control of the affected application or server, or exposing sensitive data through file manipulation.
Mitigation details and patches are referenced in advisories at http://fly.com, http://www.funair.cz/forum, and https://secsys.fudan.edu.cn/. Security practitioners should consult these sources for vendor-specific remediation steps.
OWASP Top 10 for Web (2025)
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-17538
Vulnerability Data
An arbitrary file overwrite vulnerability in FLY is FUN Aviation Navigation v35.33 allows attackers to overwrite critical internal files via the file import process, leading to arbitrary code execution or information exposure.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise Techniques
CVEs Like This One
Affected Assets
Mitigating Controls
Control response
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V5.3.2
Mitigating Controls (NIST 800-53 r5) AI
Enforces the intended directory access authorizations that path traversal would otherwise bypass.
Input validation directly neutralizes special path elements before pathname construction occurs.
Least privilege reduces the impact of any unauthorized file access obtained via traversal.
Mitigating Controls (NIST CSF 2.0) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.
Patching/maintenance can remediate known path-traversal flaws in deployed software (partial prevention of exploitability) but does nothing to stop the coding defect from being introduced in the first place.
Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.
Security testing in development catches path traversal via static/dynamic analysis.
Secure coding standards explicitly forbid unsafe path construction and mandate safe APIs.