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Fencer Vulns
high 8.3

CVE-2021-22289 json

RCE through Project Upload from Target

published 2022-08-11 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-9435

cvss
8.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.8%
EPSS 0.8% chance of exploitation in 30 days, percentile 58%
public exploits
0
none known

Summary

Improper Input Validation vulnerability in the project upload mechanism in B&R Automation Studio version >=4.0 may allow an unauthenticated network attacker to execute code.

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-22-228-05 updated cvss 8.3

B&R Industrial Automation Automation Studio 4

  • B&R Industrial Automation Automation Studio 4
    affected: mitigation “Note: This feature is not activated by default. Do not use or enable the feature if it is not necessary for projects.” br-automation.com

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

Exploit prediction

0.84% chance of exploitation in the next 30 days, higher than 58% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 8.3 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

  • B&R Industrial Automation Automation Studio

Classification

Weakness
  • CWE-20 Improper Input Validation

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.