CVE-2019-13945

mediumpriority · track · 27EPSS 0.005 · 45 %ileEURUUS
grimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
0.53% (45th) EPSS
CVSS 4.6 · medium
Is it mine?
67 products
Check your exposure
Who says so?
4 sources
cnnvd · enisa_euvd · fstec_bdu · cisa_csaf_ot

EPSS · scored 2026-10-27

A vulnerability has been identified in SIMATIC S7-1200 CPU family (incl. SIPLUS variants) (All versions), SIMATIC S7-1200 CPU family < V4.x (incl. SIPLUS variants) (All versions), SIMATIC S7-1200 CPU family V4.x (incl. SIPLUS variants) (All versions with Function State (FS) < 11), SIMATIC S7-200 SMART CPU CR20s (6ES7 288-1CR20-0AA1) (All versions <= V2.3.0 and Function State (FS) <= 3), SIMATIC S7-200 SMART CPU CR30s (6ES7 288-1CR30-0AA1) (All versions <= V2.3.0 and Function State (FS) <= 3), SIMATIC S7-200 SMART CPU CR40 (6ES7 288-1CR40-0AA0) (All versions <= V2.2.2 and Function State (FS) <= 8), SIMATIC S7-200 SMART CPU CR40s (6ES7 288-1CR40-0AA1) (All versions <= V2.3.0 and Function State (FS) <= 3), SIMATIC S7-200 SMART CPU CR60 (6ES7 288-1CR60-0AA0) (All versions <= V2.2.2 and Function State (FS) <= 10), SIMATIC S7-200 SMART CPU CR60s (6ES7 288-1CR60-0AA1) (All versions <= V2.3.0 and Function State (FS) <= 3), SIMATIC S7-200 SMART CPU SR20 (6ES7 288-1SR20-0AA0) (All versions <= V2.5.0 and Function State (FS) <= 11), SIMATIC S7-200 SMART CPU SR30 (6ES7 288-1SR30-0AA0) (All versions <= V2.5.0 and Function State (FS) <= 10), SIMATIC S7-200 SMART CPU SR40 (6ES7 288-1SR40-0AA0) (All versions <= V2.5.0 and Function State (FS) <= 10), SIMATIC S7-200 SMART CPU SR60 (6ES7 288-1SR60-0AA0) (All versions <= V2.5.0 and Function State (FS) <= 12), SIMATIC S7-200 SMART CPU ST20 (6ES7 288-1ST20-0AA0) (All versions <= V2.5.0 and Function State (FS) <= 9), SIMATIC S7-200 SMART CPU ST30 (6ES7 288-1ST30-0AA0) (All versions <= V2.5.0 and Function State (FS) <= 9), SIMATIC S7-200 SMART CPU ST40 (6ES7 288-1ST40-0AA0) (All versions <= V2.5.0 and Function State (FS) <= 8), SIMATIC S7-200 SMART CPU ST60 (6ES7 288-1ST60-0AA0) (All versions <= V2.5.0 and Function State (FS) <= 8), SIMATIC S7-200 SMART CPU family (All versions). There is an access mode used during manufacturing of the affected devices that allows additional diagnostic functionality. The security vulnerability could be exploited by an attacker with physical access to the UART interface during boot process.

01

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

  • FixedSIMATIC S7-1200 CPU family V4.x (incl.'SIPLUS variants)cisa_csaf_ot

    Update to version >= V4.4.1 and Function State (FS) >= 11

  • FixedSIMATIC S7-200 SMART CPU CR20s (6ES7 288-1CR20-0AA1)cisa_csaf_ot

    Update to version >= V2.3.0 and the latest boot loader version

  • FixedSIMATIC S7-200 SMART CPU CR30s (6ES7 288-1CR30-0AA1)cisa_csaf_ot

    Update to version >= V2.3.0 and the latest boot loader version

  • FixedSIMATIC S7-200 SMART CPU CR40 (6ES7 288-1CR40-0AA0)cisa_csaf_ot

    Update to version >= V2.2.3 and the latest boot loader version

  • FixedSIMATIC S7-200 SMART CPU CR40s (6ES7 288-1CR40-0AA1)cisa_csaf_ot

    Update to version >= V2.3.0 and the latest boot loader version

  • FixedSIMATIC S7-200 SMART CPU CR60 (6ES7 288-1CR60-0AA0)cisa_csaf_ot

    Update to version >= V2.2.3 and the latest boot loader version

  • FixedSIMATIC S7-200 SMART CPU CR60s (6ES7 288-1CR60-0AA1)cisa_csaf_ot

    Update to version >= V2.3.0 and the latest boot loader version

  • FixedSIMATIC S7-200 SMART CPU SR20 (6ES7 288-1SR20-0AA0)cisa_csaf_ot

    Update to version >= V2.5.1 and the latest boot loader version

  • FixedSIMATIC S7-200 SMART CPU SR30 (6ES7 288-1SR30-0AA0)cisa_csaf_ot

    Update to version >= V2.5.1 and the latest boot loader version

  • FixedSIMATIC S7-200 SMART CPU SR40 (6ES7 288-1SR40-0AA0)cisa_csaf_ot

    Update to version >= V2.5.1 and the latest boot loader version

  • FixedSIMATIC S7-200 SMART CPU SR60 (6ES7 288-1SR60-0AA0)cisa_csaf_ot

    Update to version >= V2.5.1 and the latest boot loader version

  • FixedSIMATIC S7-200 SMART CPU ST20 (6ES7 288-1ST20-0AA0)cisa_csaf_ot

    Update to version >= V2.5.1 and the latest boot loader version

  • FixedSIMATIC S7-200 SMART CPU ST30 (6ES7 288-1ST30-0AA0)cisa_csaf_ot

    Update to version >= V2.5.1 and the latest boot loader version

  • FixedSIMATIC S7-200 SMART CPU ST40 (6ES7 288-1ST40-0AA0)cisa_csaf_ot

    Update to version >= V2.5.1 and the latest boot loader version

  • FixedSIMATIC S7-200 SMART CPU ST60 (6ES7 288-1ST60-0AA0)cisa_csaf_ot

    Update to version >= V2.5.1 and the latest boot loader version

  • MitigationSIMATIC S7-1200 CPU family < V4.x (incl.'SIPLUS variants)cisa_csaf_ot

    Apply Defense-in-Depth: https://www.siemens.com/cert/operational-guidelines-industrial-security

  • MitigationSIMATIC S7-1200 CPU family V4.x (incl.'SIPLUS variants)cisa_csaf_ot

    Apply Defense-in-Depth: https://www.siemens.com/cert/operational-guidelines-industrial-security

  • MitigationSIMATIC S7-200 SMART CPU CR20s (6ES7 288-1CR20-0AA1)cisa_csaf_ot

    Apply Defense-in-Depth: https://www.siemens.com/cert/operational-guidelines-industrial-security

  • MitigationSIMATIC S7-200 SMART CPU CR30s (6ES7 288-1CR30-0AA1)cisa_csaf_ot

    Apply Defense-in-Depth: https://www.siemens.com/cert/operational-guidelines-industrial-security

  • MitigationSIMATIC S7-200 SMART CPU CR40 (6ES7 288-1CR40-0AA0)cisa_csaf_ot

    Apply Defense-in-Depth: https://www.siemens.com/cert/operational-guidelines-industrial-security

  • MitigationSIMATIC S7-200 SMART CPU CR40s (6ES7 288-1CR40-0AA1)cisa_csaf_ot

    Apply Defense-in-Depth: https://www.siemens.com/cert/operational-guidelines-industrial-security

  • MitigationSIMATIC S7-200 SMART CPU CR60 (6ES7 288-1CR60-0AA0)cisa_csaf_ot

    Apply Defense-in-Depth: https://www.siemens.com/cert/operational-guidelines-industrial-security

  • MitigationSIMATIC S7-200 SMART CPU CR60s (6ES7 288-1CR60-0AA1)cisa_csaf_ot

    Apply Defense-in-Depth: https://www.siemens.com/cert/operational-guidelines-industrial-security

  • MitigationSIMATIC S7-200 SMART CPU SR20 (6ES7 288-1SR20-0AA0)cisa_csaf_ot

    Apply Defense-in-Depth: https://www.siemens.com/cert/operational-guidelines-industrial-security

  • MitigationSIMATIC S7-200 SMART CPU SR30 (6ES7 288-1SR30-0AA0)cisa_csaf_ot

    Apply Defense-in-Depth: https://www.siemens.com/cert/operational-guidelines-industrial-security

  • MitigationSIMATIC S7-200 SMART CPU SR40 (6ES7 288-1SR40-0AA0)cisa_csaf_ot

    Apply Defense-in-Depth: https://www.siemens.com/cert/operational-guidelines-industrial-security

  • MitigationSIMATIC S7-200 SMART CPU SR60 (6ES7 288-1SR60-0AA0)cisa_csaf_ot

    Apply Defense-in-Depth: https://www.siemens.com/cert/operational-guidelines-industrial-security

  • MitigationSIMATIC S7-200 SMART CPU ST20 (6ES7 288-1ST20-0AA0)cisa_csaf_ot

    Apply Defense-in-Depth: https://www.siemens.com/cert/operational-guidelines-industrial-security

  • MitigationSIMATIC S7-200 SMART CPU ST30 (6ES7 288-1ST30-0AA0)cisa_csaf_ot

    Apply Defense-in-Depth: https://www.siemens.com/cert/operational-guidelines-industrial-security

  • MitigationSIMATIC S7-200 SMART CPU ST40 (6ES7 288-1ST40-0AA0)cisa_csaf_ot

    Apply Defense-in-Depth: https://www.siemens.com/cert/operational-guidelines-industrial-security

  • MitigationSIMATIC S7-200 SMART CPU ST60 (6ES7 288-1ST60-0AA0)cisa_csaf_ot

    Apply Defense-in-Depth: https://www.siemens.com/cert/operational-guidelines-industrial-security

  • No fix availableSIMATIC S7-1200 CPU family < V4.x (incl.'SIPLUS variants)cisa_csaf_ot

    Firmware versions less than V4.x cannot be updated.

02

cvss

Technical severity, 0–10. One row per scoring source.

6.8
010

base score 0–10 · higher = more severe · hover a vector to decode

v2.04.6mediumAV:L/AC:L/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 3.9 · impact 6.4
v3.16.8mediumCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 0.9 · impact 5.9
v3.16.8mediumCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:U/RC:Csecondary · CISA US
v3.16.8mediumAV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU
v3.16.2mediumCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)
03

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-20USCWE-749USCWE-749USCWE-749US
04

affected products (67)

Products and version ranges known to be affected.

showing 20 of 67
05

advisories (1)

Vendor and ecosystem advisories describing this.

  • ICSA-19-318-02Siemens S7-1200 and S7-200 SMART CPUs (Update B)2019-11-12icsa · cisa_csaf_otUS

    As a general security measure, Siemens strongly recommends to protect network access to devices with appropriate mechanisms. In order to operate the devices in a protected IT environment, Siemens recommends to configure the environment according to Siemens' operational guidelines for Industrial Security (Download: https://www.siemens.com/cert/operational-guidelines-industrial-security), and to follow the recommendations in the product manuals.

06

also known as (4)

Other names and identifiers for this entity.

07

sources

Which sources assert this record, and when.

cnnvdenisa_euvdfstec_bducisa_csaf_otNVDCVE.orgMITRE
published 2019-12-12modified 2026-06-17
08

references (8)

External citations — patches, advisories, analysis.

scry

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