CVE-2019-19102

Arbitrary file write via traversal archive entries

Published Apr 29, 2020 · Updated Aug 5, 2024

Path traversal in the upgrade service in B&R Automation Studio 4.0.x through 4.2.x allows attackers to write files via crafted ZIP archives. Its SharpZipLib version extracts crafted archive entries whose traversal paths escape the intended destination and create new files elsewhere. Exploitation requires user interaction and delivery of a malicious archive, such as through the related update-channel flaw; existing files and Windows system directories cannot be overwritten.

CVSS severity5.5
Medium
EPSS probability1.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in the upgrade service in B&R Automation Studio 4.0.x through 4.2.x allows attackers to write files via crafted ZIP archives. Its SharpZipLib version extracts crafted archive entries whose traversal paths escape the intended destination and create new files elsewhere. Exploitation requires user interaction and delivery of a malicious archive, such as through the related update-channel flaw; existing files and Windows system directories cannot be overwritten.

The record

CVE
CVE-2019-19102
Published
Apr 29, 2020
Updated
Aug 5, 2024
Vendor
B&R Industrial Automation
Product
Automation Studio
Classifications
CWE-22, T1565.001
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 29, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=4.0.x
  2. Affected versionversion=4.1.x
  3. Affected versionversion=4.2.x

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

B&R Industrial Automation · Automation Studioversion=4.0.x; version=4.1.x; version=4.2.x

Published CVSS scores

5.5Asea Brown Boveri Ltd. (ABB)CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
5.0NIST NVDAV:N/AC:L/Au:N/C:N/I:P/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1565.001Stored Data Manipulation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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