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Vulnerability · Published Apr 14, 2023 · Assigned by ABB

CVE-2023-1617Improper Authentication Mechanism in B&R VC4 Visualization

Critical 9.8

In plain English

A critical-severity improper authentication in B&R VC4 from B&R Industrial Automation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 54% of all known vulnerabilities).

Severity (CVSS 3.1)9.8Critical
Exploit odds (30 days)0.7%top 45.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

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.

Affected products (as reported)

VendorProductVersions
B&R Industrial Automation B&R VC4 3.* – through 3.96.74.0* – through 4.06.74.1* – through 4.16.34.2* – through 4.26.84.3* – through 4.34.64.4* – through 4.45.14.5* – through 4.45.34.7* – through 4.72.9

Weakness: CWE-287 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References