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CVE-2026-58114

A vulnerability has been identified in SIMATIC BATCH V9.1 (All versions), SIMATIC Information Server 2020 (All versions), SIMATIC Information Server 2022…

Products / packages Siemens SIMATIC BATCH V9.1 · Siemens SIMATIC Information Server 2020 · Siemens SIMATIC Information Server 2022 · 11 more

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Severity and exploitation

Not in CISA KEV

KEV coverage does not rule out exploitation.

KEV checked 15/11/2026, 00:40:33 UTC
siemens · CVSS:3.1 · 7.5
Assessment vectorCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
siemens · CVSS:4.0 · 7.7
Assessment vectorCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
The headline uses the highest imported catalog score. Assessments can differ by source and CVSS version.

Severity

high7.7

CVSS measures technical severity, not the likelihood of an attack.

Known exploitation

Not listed in the checked CISA KEV catalog

Absence from CISA KEV does not rule out attacks.

Public exploit

Not established by this record

Missing evidence does not mean no public exploit exists.

Remediation

Fix status not established

No structured fix or guidance is available here. Check the latest publisher advisory.

What this means

SIMATIC products do not properly secure remote user authentication with the deprecated NTLM protocol, potentially allowing unauthenticated remote attackers to impersonate a legitimate user. Affected products include SIMATIC BATCH V9.1, SIMATIC Information Server, and SIMATIC WinCC. The potential impact depends on accessible services.

Summarized by @cf/meta/llama-3.3-70b-instruct-fp8-fast. Verify details against the original sources.

Attack conditions

No attack-condition excerpt has been identified here. Review the full source description and references for authentication, network access, and configuration requirements.

Review supporting sources →

Affected versions

Check the exact model, release, and any platform requirements against your installation.

Siemens · siemens

SIMATIC BATCH V9.1

1 range
siemens version evidence

Compare with this publisher’s ranges. This does not inspect your installation.

affected

0 → before *

custom versions

unaffected

unknown

Other versions: unknown

Siemens · siemens

SIMATIC Information Server 2020

1 range
siemens version evidence

Compare with this publisher’s ranges. This does not inspect your installation.

affected

0 → before *

custom versions

unaffected

unknown

Other versions: unknown

Siemens · siemens

SIMATIC Information Server 2022

1 range
siemens version evidence

Compare with this publisher’s ranges. This does not inspect your installation.

affected

0 → before *

custom versions

unaffected

unknown

Other versions: unknown

Siemens · siemens

SIMATIC PCS 7 V9.1

1 range
siemens version evidence

Compare with this publisher’s ranges. This does not inspect your installation.

affected

0 → before *

custom versions

unaffected

unknown

Other versions: unknown

Siemens · siemens

SIMATIC Process Historian 2020

1 range
siemens version evidence

Compare with this publisher’s ranges. This does not inspect your installation.

affected

0 → before *

custom versions

unaffected

unknown

Other versions: unknown

Siemens · siemens

SIMATIC Process Historian 2022

1 range
siemens version evidence

Compare with this publisher’s ranges. This does not inspect your installation.

affected

0 → before *

custom versions

unaffected

unknown

Other versions: unknown

Siemens · siemens

SIMATIC WinCC Runtime Professional V17

1 range
siemens version evidence

Compare with this publisher’s ranges. This does not inspect your installation.

affected

0 → before *

custom versions

unaffected

unknown

Other versions: unknown

Siemens · siemens

SIMATIC WinCC Runtime Professional V18

1 range
siemens version evidence

Compare with this publisher’s ranges. This does not inspect your installation.

affected

0 → before *

custom versions

unaffected

unknown

Other versions: unknown

Siemens · siemens

SIMATIC WinCC Runtime Professional V19

1 range
siemens version evidence

Compare with this publisher’s ranges. This does not inspect your installation.

affected

0 → before *

custom versions

unaffected

unknown

Other versions: unknown

Siemens · siemens

SIMATIC WinCC Runtime Professional V20

1 range
siemens version evidence

Compare with this publisher’s ranges. This does not inspect your installation.

affected

0 → before *

custom versions

unaffected

unknown

Other versions: unknown

Siemens · siemens

SIMATIC WinCC Runtime Professional V21

1 range
siemens version evidence

Compare with this publisher’s ranges. This does not inspect your installation.

affected

0 → before *

custom versions

unaffected

unknown

Other versions: unknown

Siemens · siemens

SIMATIC WinCC V7.5

1 range
siemens version evidence

Compare with this publisher’s ranges. This does not inspect your installation.

affected

0 → before *

custom versions

unaffected

unknown

Other versions: unknown

Siemens · siemens

SIMATIC WinCC V8.0

1 range
siemens version evidence

Compare with this publisher’s ranges. This does not inspect your installation.

affected

0 → before *

custom versions

unaffected

unknown

Other versions: unknown

Siemens · siemens

SIMATIC WinCC V8.1

1 range
siemens version evidence

Compare with this publisher’s ranges. This does not inspect your installation.

affected

0 → before *

custom versions

unaffected

unknown

Other versions: unknown

Automatic dependency matching is unavailable for this record. Use the product evidence and publisher’s instructions to check your installation.

What to do

Compare your installed product and version with the affected versions above. A matching product name alone does not confirm exposure.

No structured fix or remediation guidance is available here. Check the full source description and vendor’s latest advisory for a patch or workaround; do not assume another version is safe.

cve.new guidance unless attributed to a publisher. This page does not inspect your installation.

Public exploit evidence

No public exploit reference is identified in the imported evidence. This is not a claim that no exploit exists.

Original source description

Read the full publisher description

A vulnerability has been identified in SIMATIC BATCH V9.1 (All versions), SIMATIC Information Server 2020 (All versions), SIMATIC Information Server 2022 (All versions), SIMATIC PCS 7 V9.1 (All versions), SIMATIC Process Historian 2020 (All versions), SIMATIC Process Historian 2022 (All versions), SIMATIC WinCC Runtime Professional V17 (All versions), SIMATIC WinCC Runtime Professional V18 (All versions), SIMATIC WinCC Runtime Professional V19 (All versions), SIMATIC WinCC Runtime Professional V20 (All versions), SIMATIC WinCC Runtime Professional V21 (All versions), SIMATIC WinCC V7.5 (All versions), SIMATIC WinCC V8.0 (All versions), SIMATIC WinCC V8.1 (All versions). Affected systems do not properly secure their remote user authentication with the deprecated NTLM protocol. This could allow unauthenticated remote attackers, who have achieved a machine in the middle position, to relay NTLM authentication and impersonate a legitimate user. The potential impact depends on the services that are accessible, e.g. a SQL server used by WinCC.

References

1 sources
cert-portal.siemens.com/productcert/html/ssa-970803.html
Source referencesiemens

Inside the record

Evidence available

Package identity · not supplied
Version evidence
Remediation guidance · not supplied
Weakness classification
Additional publishers

Describes the evidence in this view, not whether the product is safe.

Original records

CVE-2026-58114

View the latest unmodified CVE JSON from the official source. It may be newer than this imported page.

cve.new JSON →

Underlying weaknesses

The source’s classification of what caused the vulnerability.

CWE-1390 ↗

CWE-1390: Weak Authentication

siemens

Related →
Contributing organizations · 2
siemens

Assigning organization

2026-11-10
CISA-ADP

Additional data publisher

2026-11-10

Timeline

All times UTC

  1. Advisory published

    Publication date supplied by the source.

  2. Source updated

    Latest modification date supplied by the source.

  3. Last imported by cve.new

    Latest catalog import, not the date we first saw this advisory.

What changed

Follow changes
  1. CVE · CVE-2026-58114

    Observed 2026-11-10T19:34:00.187Z · upstream updated 2026-11-10T19:04:48.646Z

    Prioritization updated

    before

    []

    after

    [
  {
    "source": "CISA-ADP",
    "type": "SSVC",
    "role": "CISA Coordinator",
    "timestamp": "2026-11-10T19:02:23.765824Z",
    "decisions": [
      {
        "name": "Exploitation",
        "value": "none"
      },
      {
        "name": "Automatable",
        "value": "no"
      },
      {
        "name": "Technical Impact",
        "value": "total"
      }
    ]
  }
]

Large field values are marked as truncated previews. Original source snapshots remain retained.

Showing up to 50 most recent observed changes.