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CVE-2022-38465· NVD / CVE Program· CNA siemens

A vulnerability has been identified in SIMATIC Drive Controller family (All versions < V2.9.2), SIMATIC ET 200SP Open Controller CPU 1515SP

A vulnerability has been identified in SIMATIC Drive Controller family (All versions < V2.9.2), SIMATIC ET 200SP Open Controller CPU 1515SP PC (incl. SIPLUS variants) (All versions), SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants) (All versions < V21.9), SIMATIC S7-1200 CPU family (incl. SIPLUS variants) (All versions < V4.5.0), SIMATIC S7-1500 CPU family (incl. related ET200 CPUs and SIPLUS variants) (All versions < V2.9.2), SIMATIC S7-1500 Software Controller (All versions < V21.9), SIMATIC S7-PLCSIM Advanced (All versions < V4.0), SINUMERIK MC (All versions < V6.21), SINUMERIK ONE (All versions < V6.21). Affected products protect the built-in global private key in a way that cannot be considered sufficient any longer. The key is used for the legacy protection of confidential configuration data and the legacy PG/PC and HMI communication. This could allow attackers to discover the private key of a CPU product family by an offline attack against a single CPU of the family. Attackers could then use this knowledge to extract confidential configuration data from projects that are protected by that key or to perform attacks against legacy PG/PC and HMI communication.

HighCVSS 7.8 · v3.1—No exploit No fix recorded
Published
Oct 11, 2022
Updated
Jun 17, 2026
EPSS
0.2% · 13th percentile
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JSON

Action score

31

Monitor

Low priority for now.

CVSS
31 / 40 · 7.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
7.8
CNA · siemens
9.3
1.5 point gap

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:P/RL:O/RC:C

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Affected systems

VendorProduct
siemenssimatic et 200 sp open controller cpu 1515sp pc2 firmware
siemenssimatic et 200 open controller cpu 1515sp pc2
siemenssimatic et 200 sp open controller cpu 1515sp pc firmware
siemenssimatic et 200 open controller cpu 1515sp pc
siemenssimatic drive controller cpu 1504d tf firmware
siemenssimatic drive controller cpu 1504d tf
siemenssimatic drive controller cpu 1507d tf firmware
siemenssimatic drive controller cpu 1507d tf
siemenssimatic s7-1200 cpu 12 1211c firmware
siemenssimatic s7-1200 cpu 12 1211c
siemenssimatic s7-1200 cpu 12 1212c firmware
siemenssimatic s7-1200 cpu 12 1212c

and 77 more

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • siemens simatic drive controller cpu 1504d tf firmwarebefore 2.9.2
  • siemens simatic drive controller cpu 1507d tf firmwarebefore 2.9.2
  • siemens simatic et 200 sp open controller cpu 1515sp pc firmwareall versions
  • siemens simatic et 200 sp open controller cpu 1515sp pc2 firmwarebefore 21.9
  • siemens simatic s7-1200 cpu 12 1211c firmwarebefore 4.5.0
  • siemens simatic s7-1200 cpu 12 1212c firmwarebefore 4.5.0
  • siemens simatic s7-1200 cpu 12 1212fc firmwarebefore 4.5.0
  • siemens simatic s7-1200 cpu 12 1214c firmwarebefore 4.5.0
  • siemens simatic s7-1200 cpu 12 1214fc firmwarebefore 4.5.0
  • siemens simatic s7-1200 cpu 12 1215c firmwarebefore 4.5.0
  • siemens simatic s7-1200 cpu 12 1215fc firmwarebefore 4.5.0
  • siemens simatic s7-1200 cpu 12 1217c firmwarebefore 4.5.0
  • siemens simatic s7-1500 cpu 1510sp firmwarebefore 2.9.2
  • siemens simatic s7-1500 cpu 1510sp-1 firmwarebefore 2.9.2
  • siemens simatic s7-1500 cpu 1511-1 firmwarebefore 2.9.2
  • siemens simatic s7-1500 cpu 1511t-1 firmwarebefore 2.9.2
  • siemens simatic s7-1500 cpu 1511tf-1 firmwarebefore 2.9.2
  • siemens simatic s7-1500 cpu 1512c-1 firmwarebefore 2.9.2
  • siemens simatic s7-1500 cpu 1512sp-1 firmwarebefore 2.9.2
  • siemens simatic s7-1500 cpu 1512spf-1 firmwarebefore 2.9.2

Versions reported by the vendor

Affected version ranges reported by the assigning authority (siemens). Independent of NVD's CPE analysis and usually ahead of it.

  • Siemens SIMATIC Drive Controller family

    • All versions < V2.9.2affected

  • Siemens SIMATIC ET 200SP Open Controller CPU 1515SP PC (incl. SIPLUS variants)

    • All versionsaffected

  • Siemens SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants)

    • All versions < V21.9affected

  • Siemens SIMATIC S7-1200 CPU family (incl. SIPLUS variants)

    • All versions < V4.5.0affected

  • Siemens SIMATIC S7-1500 CPU family (incl. related ET200 CPUs and SIPLUS variants)

    • All versions < V2.9.2affected

  • Siemens SIMATIC S7-1500 Software Controller

    • All versions < V21.9affected

  • Siemens SIMATIC S7-PLCSIM Advanced

    • All versions < V4.0affected

  • Siemens SINUMERIK MC

    • All versions < V6.21affected

  • Siemens SINUMERIK ONE

    • All versions < V6.21affected

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-522 · Insufficiently Protected Credentials

CVSS vector

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

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Noroxi analysis

No Noroxi analysis for this record yet

We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

We use this product, ask for help

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

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