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CVE-2023-31923

HIGH
8.8
CVSS Score
Published: May 22, 2023 at 12:00 AM UTC
Updated: June 17, 2026 at 05:57 AM UTC
1 product affected across 1 vendorBioStar 2

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Severity
HIGH8.8
Exploit prediction
EPSS 0.9%
SSVC
PoC

Description

Suprema BioStar 2 before 2022 Q4, v2.9.1 has Insecure Permissions. A vulnerability in the web application allows an authenticated attacker with "User Operator" privileges to create a highly privileged user account. The vulnerability is caused by missing server-side validation, which can be exploited to gain full administrator privileges on the system.

Affected

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

BioStar 2· Supremainc
95%
v < 2.9.1
Affected range stops below 2.9.1, 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)

ExploitThird Party Advisory
Source: [email protected]
https://nobugescapes.com/blog/creating-a-new-user-with-admin-privilege/

SSVC — Action Prioritization

SSVCPoCNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

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-281

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