CVE-2015-1355

lowpriority · track · 8EPSS 0.004 · 31 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.37% (31st) EPSS

CVSS 2.1 · low

Is it mine?

4 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) before 13 SP1 uses a weak password-hash algorithm, which makes it easier for local users to determine cleartext passwords by reading a project file and conducting a brute-force attack.

remediations

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

No vendor fix yet; a mitigation is available.

MitigationSIMATIC STEP 7 TIA Portalcisa_csaf_ot
For more information on these vulnerabilities and detailed instructions, please see Siemens Security Advisory SSA-234789 at the following location: http://www.siemens.com/cert/advisories

cvss

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

2.1

010

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

v2.02.1lowAV:L/AC:L/Au:N/C:P/I:N/A:Nprimary · NVD / NIST USexploitability 3.9 · impact 2.9

v2.02.1lowAV:L/AC:L/Au:N/C:P/I:N/A:Nsecondary · CISA US

v2.01.8lowAV:L/AC:L/Au:N/C:P/I:N/A:N/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-310USprimaryCWE-916US

affected products (4)

Products and version ranges known to be affected.

Siemens SIMATIC STEP 7 TIA Portal: <V13_SP1all versionscisa_csaf_otUS
Siemens SIMATIC STEP 7 TIA Portal< V13_SP1cisa_csaf_otUS
n/a n/a≤ n/aenisa_euvdEU
siemens simatic step 7≤ 13.0nvdUScpe:2.3:a:siemens:simatic_step_7:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

ICSA-15-048-01Siemens SIMATIC STEP 7 TIA Portal Vulnerabilities2015-11-20icsa · 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 2015-02-18modified 2026-06-17

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references (3)

External citations — patches, advisories, analysis.

scry

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