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TI-2023-01522 Aliases CVE-2023-1617GHSA-493h-rq8m-6xjp

Improper Authentication Mechanism in B&R VC4 Visualization

Priority MEDIUM 50CWE-287Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-287.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00719 54th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
B&R Industrial AutomationB&R VC4up to 3.96.7; up to 4.06.7; up to 4.16.3; up to 4.26.8; up to 4.34.6; up to 4.45.1; up to 4.45.3; up to 4.72.9—No fix listedCNA
  • B&R VC4 VendorB&R Industrial Automation Affected up to 3.96.7; up to 4.06.7; up to 4.16.3; up to 4.26.8; up to 4.34.6; up to 4.45.1; up to 4.45.3; up to 4.72.9 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:br-automation:vc4:*:*:*:*:*:*:*:*before 3.96.8; 4.0.0 – 4.06.4; 4.10.0 – 4.16.3; 4.20.0 – 4.26.8; 4.30.0 to before 4.34.7; 4.40.0 – 4.45.1; 4.50.0 – 4.53.0; 4.70.0 to before 4.73.0VulnerableB&R Industrial Automation
  • cpe:2.3:a:br-automation:vc4:*:*:*:*:*:*:*:* Versions before 3.96.8; 4.0.0 – 4.06.4; 4.10.0 – 4.16.3; 4.20.0 – 4.26.8; 4.30.0 to before 4.34.7; 4.40.0 – 4.45.1; 4.50.0 – 4.53.0; 4.70.0 to before 4.73.0 Vulnerable ·B&R Industrial Automation

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-1617
  2. 2026-10-03 Alias added: GHSA-493h-rq8m-6xjp

References

Advisory 1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences