CVE-2023-26293

Code execution via configuration-file path traversal

Published Apr 11, 2023 · Updated Nov 25, 2024

Path traversal in Siemens TIA Portal allows attackers to execute arbitrary code via a malicious PC system configuration file. Siemens does not identify the parser; configuration-file processing fails to constrain traversal paths before creating or overwriting arbitrary files in the engineering system. Exposure requires a user to open an untrusted local file in V15, before V16 Update 7, before V17 Update 6, or before V18 Update 1.

CVSS severity7.3
High
EPSS probability0.25%
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 Siemens TIA Portal allows attackers to execute arbitrary code via a malicious PC system configuration file. Siemens does not identify the parser; configuration-file processing fails to constrain traversal paths before creating or overwriting arbitrary files in the engineering system. Exposure requires a user to open an untrusted local file in V15, before V16 Update 7, before V17 Update 6, or before V18 Update 1.

The record

CVE
CVE-2023-26293
Published
Apr 11, 2023
Updated
Nov 25, 2024
Vendor
Siemens
Product
Totally Integrated Automation Portal (TIA Portal)
Classifications
CWE-20, T1204.002, T1203
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 11, 2023CVE publishedPublication date reported by the CVE source.
  2. Nov 25, 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=0 <*
  2. Affected versionversion=0 <V16 Update 7
  3. Affected versionversion=0 <V17 Update 6
  4. Affected versionversion=0 <V18 Update 1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Siemens · Totally Integrated Automation Portal (TIA Portal)version=0 <*; version=0 <V16 Update 7; version=0 <V17 Update 6; version=0 <V18 Update 1

Published CVSS scores

7.3Siemens ProductCERTCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L

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-20Improper Input Validation
T1204.002User Execution: Malicious File
T1203Exploitation for Client Execution

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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