CVE-2018-16494
CVE-2018-16494 is a high-severity vulnerability in Versa-networks Versa Operating System with a CVSS 3.x base score of 8.8. 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-668.
Key facts
- Severity: High (CVSS 3.x base score 8.8)
- CVSS v2: 6.5
- EPSS exploit prediction: 2% (78th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-668
- Affected product: Versa-networks Versa Operating System
- Published:
- Last modified:
Description
In VOS and overly permissive "umask" may allow for authorized users of the server to gain unauthorized access through insecure file permissions that can result in an arbitrary read, write, or execution of newly created files and directories. Insecure umask setting was present throughout the Versa servers.
Frequently asked questions
- What is CVE-2018-16494?
- In VOS and overly permissive "umask" may allow for authorized users of the server to gain unauthorized access through insecure file permissions that can result in an arbitrary read, write, or execution of newly created files and directories. Insecure umask setting was present throughout the Versa servers.
- How severe is CVE-2018-16494?
- CVE-2018-16494 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2018-16494 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2018-16494?
- CVE-2018-16494 affects Versa-networks Versa Operating System. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2018-16494?
- 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.
- When was CVE-2018-16494 published?
- CVE-2018-16494 was published on 2021-05-26 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:o:versa-networks:versa_operating_system:*:*:*:*:*:*:*:*
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