CVE-2017-12740

mediumpriority · track · 24OT risk · elevatedEPSS 0.006 · 47 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.57% (47th) EPSS

CVSS 4.3 · 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

Siemens LOGO! Soft Comfort (All versions before V8.2) lacks integrity verification of software packages downloaded via an unprotected communication channel. This could allow a remote attacker to manipulate the software package while performing a Man-in-the-Middle (MitM) attack.

remediations

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

A vendor fix is available.

FixedLOGO! Soft Comfortcisa_csaf_ot
As a general security measure, Siemens strongly recommends protecting network access to the devices with appropriate mechanisms. Siemens advises configuring the environment according to Siemens operational guidelines in order to run the devices in a protected IT environment.

cvss

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

5.9

010

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

v2.04.3mediumAV:N/AC:M/Au:N/C:N/I:P/A:Nprimary · NVD / NIST USexploitability 8.6 · impact 2.9

v3.05.9mediumCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:Nprimary · NVD / NIST USexploitability 2.2 · impact 3.6

v3.05.9mediumCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:Nsecondary · CISA US

v3.05.4mediumCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-345USprimaryCWE-494USCWE-494US

affected products (4)

Products and version ranges known to be affected.

LOGO! Soft Comfort: All versions prior to V8.2all versionscisa_csaf_otUS
Siemens LOGO! Soft Comfort< 8.2cisa_csaf_otUS
n/a Siemens LOGO! Soft Comfort (All versions before V8.2)≤ Siemens LOGO! Soft Comfort (All versions before V8.2)enisa_euvdEU
siemens logo! soft comfort< 8.2nvdUScpe:2.3:a:siemens:logo\!_soft_comfort:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

ICSA-17-353-04Siemens LOGO! Soft Comfort2017-12-19icsa · cisa_csaf_otUS
ATTENTION: Remotely exploitable.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cisa_csaf_ot nvd NVD CVE.org MITRE

published 2017-12-26modified 2026-06-17

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+1448 more

references (3)

External citations — patches, advisories, analysis.

scry

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