CVE-2018-16495

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 0.9%

Description

In VOS user session identifier (authentication token) is issued to the browser prior to authentication but is not changed after the user successfully logs into the application. Failing to issue a new session ID following a successful login introduces the possibility for an attacker to set up a trap session on the device the victim is likely to login with.

Affected

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

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
https://hackerone.com/reports/1168192

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-384

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