Is CVE-2023-40253 actively exploited?

No active exploitation of CVE-2023-40253 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2023-40253 be exploited remotely?

Yes. CVE-2023-40253 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2023-40253?

CVE-2023-40253 has a CVSS score of 9.8 (CRITICAL).

HOME VULNERABILITIESCVE-2023-40253

CRITICAL

CVE-2023-40253

CWE-78Published: August 11, 2023· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

Improper Authentication vulnerability in Genians Genian NAC V4.0, Genians Genian NAC V5.0, Genians Genian NAC Suite V5.0, Genians Genian ZTNA allows Authentication Abuse.This issue affects Genian NAC V4.0: from V4.0.0 through V4.0.155; Genian NAC V5.0: from V5.0.0 through V5.0.42 (Revision 117460); Genian NAC Suite V5.0: from V5.0.0 through V5.0.54; Genian ZTNA: from V6.0.0 through V6.0.15.

NVD Source

Technical Analysis

CVE-2023-40253 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.