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CVE-2018-16494

HIGH
8.8
CVSS Score
Published: May 26, 2021 at 06:46 PM UTC
Updated: June 17, 2026 at 01:44 AM UTC
1 product affected across 1 vendorVersa Operating System

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Severity
HIGH8.8
Exploit prediction
EPSS 2%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Versa Operating System· Versa Networks
95%
v < 16.1r2s1120.2.0 ≤ v < 20.2.221.1.0 ≤ v < 21.1.1Fixed Versions: 16.1R2S11, 20.2.2, 21.1.1, 21.2.1
Affected range stops below 16.1r2s11, so it looks safe — our inference, not a vendor statement
Affected range stops below 20.2.2, so it looks safe — our inference, not a vendor statement
Affected range stops below 21.1.1, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

x_refsource_MISCThird Party Advisory
Source: [email protected]
https://hackerone.com/reports/1168191

CVSS

8.8HIGH[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-377CWE-668

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