Zip Slip Vulnerability in B&R Automation Studio Project Import

published 2024-02-02 2 y ago modified 2026-06-17 4 mo ago also EUVD-2021-9427

cvss: 6.3; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.4%; EPSS 0.4% chance of exploitation in 30 days, percentile 31%
public exploits: 0; none known

: Relative Path Traversal vulnerability in B&R Industrial Automation Automation Studio allows Relative Path Traversal.This issue affects Automation Studio: from 4.0 through 4.12.

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 2 y ago (2024-08-21)

Exploit prediction

0.38% chance of exploitation in the next 30 days, higher than 31% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	6.3	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N
NVD	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Affected products

B&R Industrial Automation Automation Studio

Classification

Weakness

CWE-23 Relative Path Traversal
CWE-22 Improper Limitation of a Pathname to a Restricted Directory

References

br-automation.com /fileadmin/2021-11_ZipSlip_Vulnerability_in_Automation_Studio_Project_Import-b90d2f42.pdf
vendor-advisory

Sources

CVE List CVE-2021-22281
NVD CVE-2021-22281

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.

Summary