CVE-2025-9963
CVE-2025-9963 is a critical-severity vulnerability with a CVSS 4.0 base score of 9.4. 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-22.
Key facts
- Severity: Critical (CVSS 4.0 base score 9.4)
- EPSS exploit prediction: 0% (11th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2025-30883
- Weakness: CWE-22
- Published:
- Last modified:
Description
A path traversal vulnerability in Novakon P series allows to expose the root file system "/" and modify all files with root permissions. This way the system can also be compromized.This issue affects P series: P – V2001.A.C518o2 until P-2.0.05 Build 2026.02.06 (commit d0f97fd9).
Frequently asked questions
- What is CVE-2025-9963?
- A path traversal vulnerability in Novakon P series allows to expose the root file system "/" and modify all files with root permissions. This way the system can also be compromized.This issue affects P series: P – V2001.A.C518o2 until P-2.0.05 Build 2026.02.06 (commit d0f97fd9).
- How severe is CVE-2025-9963?
- CVE-2025-9963 has a CVSS 4.0 base score of 9.4, rated critical severity.
- Is CVE-2025-9963 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (11th percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2025-9963?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- Does CVE-2025-9963 have an EU (EUVD) identifier?
- Yes. CVE-2025-9963 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-30883.
- When was CVE-2025-9963 published?
- CVE-2025-9963 was published on 2025-09-23 and last updated on 2026-06-17.
References
- https://cyberdanube.com/security-research/multiple-vulnerabilities-in-novakon-hmi-series/
- https://www.novakon.com.tw/common/frontend/download?path=/uploads/images/support/download/NOVAKON_P-Series-HMI_Security-Advisory_CVE-2025-9962-9966_Rev2_0.pdf
- https://www.novakon.com.tw/en/news/detail/Security_Advisory__Firmware_Update_Available_for_NOVAKON_P_Series_HMI_Products
- http://seclists.org/fulldisclosure/2025/Sep/70
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