Is CVE-2023-1617 actively exploited?

No active exploitation of CVE-2023-1617 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2023-1617 be exploited remotely?

Yes. CVE-2023-1617 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2023-1617?

CVE-2023-1617 has a CVSS score of 9.8 (CRITICAL).

HOME VULNERABILITIESCVE-2023-1617

CRITICAL

CVE-2023-1617

CWE-287Published: April 14, 2023· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

Improper Authentication vulnerability in B&R Industrial Automation B&R VC4 (VNC-Server modules). This vulnerability may allow an unauthenticated network-based attacker to bypass the authentication mechanism of the VC4 visualization on affected devices. The impact of this vulnerability depends on the functionality provided in the visualization.

This issue affects B&R VC4: from 3.* through 3.96.7, from 4.0* through 4.06.7, from 4.1* through 4.16.3, from 4.2* through 4.26.8, from 4.3* through 4.34.6, from 4.4* through 4.45.1, from 4.5* through 4.45.3, from 4.7* through 4.72.9.

NVD Source

Risk Analysis

B&R Industrial Automation VC4 visualization modules contain an improper authentication vulnerability that allows unauthenticated network attackers to bypass security mechanisms. This critical flaw carries a 9.8 CVSS score, indicating a high risk of unauthorized access to industrial control interfaces.

There is no known public exploit, and it is not in the KEV catalog. The vulnerability is remotely exploitable.

Recommended Action

Apply the provided security updates for the affected VC4 versions to resolve the authentication bypass.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2023-1617 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.

From a weakness classification perspective (CWE-287): Authentication bypass vulnerabilities allow attackers to access protected resources without valid credentials.