CVE-2015-1601

mediumpriority · track · 28EPSS 0.014 · 73 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.43% (73rd) EPSS

CVSS 6.8 · medium

Is it mine?

8 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · cisa_csaf_ot · nvd

EPSS · scored 2026-10-27

Siemens SIMATIC STEP 7 (TIA Portal) 12 and 13 before 13 SP1 Upd1 allows man-in-the-middle attackers to obtain sensitive information or modify transmitted data via unspecified vectors.

remediations

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

No vendor fix yet; a mitigation is available.

MitigationSIMATIC STEP 7 (TIA Portal) V12cisa_csaf_ot
After applying the update, Siemens strongly recommends to change protection-level and web server passwords.
MitigationSIMATIC STEP 7 (TIA Portal) V13cisa_csaf_ot
After applying the update, Siemens strongly recommends to change protection-level and web server passwords.

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

v2.06.8mediumAV:N/AC:M/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 8.6 · impact 6.4

v2.05.8mediumAV:N/AC:M/Au:N/C:P/I:P/A:Nsecondary · CISA US

v2.05.8mediumAV:N/AC:M/Au:N/C:P/I:P/A:P/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-254USprimaryCWE-300US

affected products (8)

Products and version ranges known to be affected.

Siemens SIMATIC STEP 7 (TIA Portal) V12: <V12_SP1_Upd5all versionscisa_csaf_otUS
Siemens SIMATIC STEP 7 (TIA Portal) V13: <V13_SP1_Upd1all versionscisa_csaf_otUS
Siemens SIMATIC STEP 7 (TIA Portal) V12< V12_SP1_Upd5cisa_csaf_otUS
Siemens SIMATIC STEP 7 (TIA Portal) V13< V13_SP1_Upd1cisa_csaf_otUS
n/a n/a≤ n/aenisa_euvdEU
siemens simatic step 7≤ 13nvdUScpe:2.3:a:siemens:simatic_step_7:*:*:*:*:*:*:*:*
siemens simatic step 7= 12nvdUScpe:2.3:a:siemens:simatic_step_7:*:*:*:*:*:*:*:*
siemens simatic step 7= 13nvdUScpe:2.3:a:siemens:simatic_step_7:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

ICSA-15-050-01ASiemens SIMATIC STEP 7 TIA Portal Vulnerabilities (Update A)2015-11-22icsa · cisa_csaf_otUS
This CSAF advisory was extracted from unstructured data and may contain inaccuracies. If you notice any errors, please reach out to the designated contact at CISA CSAF: central@cisa.dhs.gov

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 2015-04-06modified 2026-06-17

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+795 more

references (8)

External citations — patches, advisories, analysis.

scry

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