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Simatic Pcs 7Application · Siemens

CVE-2023-25910

HIGH · 8.8 CVSS v3.1 Published 2023-06-13
Fix available
A fix is available. Upgrade to 5.7 or later.
See remediation →
94/100
Remediation priority · Urgent
Remotely reachable Zero-click Patch available

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
A vulnerability has been identified in SIMATIC PCS 7 (All versions < V9.1 SP2 UC04), SIMATIC S7-PM (All versions < V5.7 SP1 HF1), SIMATIC S7-PM (All versions < V5.7 SP2 HF1), SIMATIC STEP 7 V5 (All versions < V5.7). The affected product contains a database management system that could allow remote users with low privileges to use embedded functions of the database (local or in a network share) that have impact on the server. An attacker with network access to the server network could leverage these embedded functions to run code with elevated privileges in the database management system's server.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis
How this class of weakness works · CWE-94

The application evaluates attacker-influenced input as code, handing them a way to run logic inside the process. Depending on the runtime this can escalate directly to remote code execution. Remediation means removing dynamic evaluation of untrusted input and replacing it with safe, data-driven alternatives.

General guidance for the code injection class — the official description and references above are authoritative for this specific CVE. Want a bespoke review and a reviewed fix? Ask our team →

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
Simatic Pcs 7Application
Affected:all versions
Simatic S7 PmApplication
Affected:all versions
Simatic Step 7Application
Affected:< 5.7

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Upgrade available Upgrade to 5.7 or later
Fixed in 5.7
Vendor patch cert-portal.siemens.com →
Recommended fix High confidence

SIMATIC PCS 7: V9.1 SP2 UC04 | SIMATIC S7-PM: V5.7 SP2 HF1 | STEP 7 V5: V5.7

  1. 1. Identify the exact Simatic product variant installed (SIMATIC PCS 7, SIMATIC S7-PM, or STEP 7 V5)
  2. 2. For SIMATIC PCS 7: Upgrade to version V9.1 SP2 UC04 or later
  3. 3. For SIMATIC S7-PM: Upgrade to version V5.7 SP2 HF1 or later
  4. 4. For SIMATIC STEP 7 V5: Upgrade to version V5.7 or later
  5. 5. Obtain the patch from the vendor: https://cert-portal.siemens.com/productcert/pdf/ssa-968170.pdf
  6. 6. Test the upgrade in a staging environment before deploying to production
  7. 7. Apply the upgrade following Siemens installation documentation
Caveat Review Siemens patch notes for any configuration or compatibility changes before upgrading

Generated from the published advisory — verify against the referenced sources before acting.

We can perform the upgrade in your staging environment and verify nothing breaks — typical engagement from $3,200. Get the upgrade done

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2023-25910 in production — separate from our analysis above.

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What this is

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What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
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