CVE-2017-12735

mediumpriority · track · 30EPSS 0.011 · 66 %ileEUUS
grimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
1.14% (66th) EPSS
CVSS 5.8 · medium
Is it mine?
4 products
Check your exposure
Who says so?
4 sources
cnnvd · enisa_euvd · cisa_csaf_ot · nvd

EPSS · scored 2026-10-28

A vulnerability has been identified in LOGO! 8 BM (incl. SIPLUS variants) (All versions < V8.3). An attacker who performs a Man-in-the-Middle attack between the LOGO! BM and other devices could potentially decrypt and modify network traffic.

01

remediations

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

A vendor fix is available.

  • FixedLOGO! 8 BM (incl.'SIPLUS variants)cisa_csaf_ot

    Update to V8.3. Notice that in order to update, a new hardware version is required. https://support.industry.siemens.com/cs/ww/en/view/109783346/

  • MitigationLOGO! 8 BM (incl.'SIPLUS variants)cisa_csaf_ot

    Apply Defense-in-Depth (see http://www.industry.siemens.com/topics/global/en/industrial-security/concept/Pages/defense-in-depth.aspx)

02

cvss

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

7.4
010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5.8–7.4

v2.05.8mediumAV:N/AC:M/Au:N/C:P/I:P/A:Nprimary · NVD / NIST USexploitability 8.6 · impact 4.9
v3.17.4highCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:Nprimary · NVD / NIST USexploitability 2.2 · impact 5.2
v3.17.4highCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N/E:P/RL:O/RC:Csecondary · CISA US
v3.16.8mediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N/E:Usecondary · CVSS-BT (t0sche)
03

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-300USCWE-300US
04

affected products (4)

Products and version ranges known to be affected.

05

advisories (1)

Vendor and ecosystem advisories describing this.

  • ICSA-17-243-02Siemens LOGO! (Update A)2017-08-30icsa · 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 (3)

Other names and identifiers for this entity.

07

sources

Which sources assert this record, and when.

cnnvdenisa_euvdcisa_csaf_otnvdNVDCVE.orgMITRE
published 2017-08-30modified 2026-06-17
08

references (8)

External citations — patches, advisories, analysis.

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