CVE-2014-4686

mediumpriority · track · 27OT risk · elevatedEPSS 0.011 · 65 %ileEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.09% (65th) EPSS

CVSS 6.8 · medium

Is it mine?

15 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · cisa_csaf_ot

EPSS · scored 2026-10-24

The Project administration application in Siemens SIMATIC WinCC before 7.3, as used in PCS7 and other products, has a hardcoded encryption key, which allows remote attackers to obtain sensitive information by extracting this key from another product installation and then employing this key during the sniffing of network traffic on TCP port 1030.

remediations

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

No vendor fix yet; a mitigation is available.

MitigationSIMATIC PCS7 (as WinCC is incorporated)cisa_csaf_ot
Additional information about SIMATIC WinCC V7.3 is available at the following location (http://support.automation.siemens.com/WW/view/en/97493192)
http://support.automation.siemens.com/WW/view/en/97493192
MitigationSIMATIC WinCCcisa_csaf_ot
Additional information about SIMATIC WinCC V7.3 is available at the following location (http://support.automation.siemens.com/WW/view/en/97493192)
http://support.automation.siemens.com/WW/view/en/97493192
MitigationSIMATIC WinCC TIA Portalcisa_csaf_ot
For more information on these vulnerabilities and detailed instructions, please see Siemens Security Advisory SSA-543623 at the following location:http://www.siemens.com/cert/advisories

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

v2.06.8mediumAV:N/AC:M/Au:N/C:P/I:P/A:Psecondary · CISA US

v2.06.8mediumAV:N/AC:M/Au:N/C:P/I:P/A:Psecondary · FSTEC (BDU) RU

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-321USCWE-321US

affected products (15)

Products and version ranges known to be affected.

Siemens SIMATIC PCS7 (as WinCC is incorporated): <8.1all versionscisa_csaf_otUS
Siemens SIMATIC WinCC: <7.3all versionscisa_csaf_otUS
Siemens SIMATIC PCS7 (as WinCC is incorporated)< 8.1cisa_csaf_otUS
Siemens SIMATIC WinCC< 7.3cisa_csaf_otUS
Siemens SIMATIC WinCC TIA Portal< V13_SP1cisa_csaf_otUS
n/a n/a≤ n/aenisa_euvdEU
Siemens AG SIMATIC WinCC5.0 → 7.2fstec_bduRU
siemens simatic pcs7≤ 8.0nvdUScpe:2.3:a:siemens:simatic_pcs7:*:*:*:*:*:*:*:*
siemens simatic pcs7= 7.1nvdUScpe:2.3:a:siemens:simatic_pcs7:*:*:*:*:*:*:*:*
siemens simatic pcs7= 8.0nvdUScpe:2.3:a:siemens:simatic_pcs7:*:*:*:*:*:*:*:*
siemens wincc≤ 7.2nvdUScpe:2.3:a:siemens:wincc:*:*:*:*:*:*:*:*
siemens wincc= 5.0nvdUScpe:2.3:a:siemens:wincc:*:*:*:*:*:*:*:*
siemens wincc= 6.0nvdUScpe:2.3:a:siemens:wincc:*:*:*:*:*:*:*:*
siemens wincc= 7.0nvdUScpe:2.3:a:siemens:wincc:*:*:*:*:*:*:*:*
siemens wincc= 7.1nvdUScpe:2.3:a:siemens:wincc:*:*:*:*:*:*:*:*

advisories (2)

Vendor and ecosystem advisories describing this.

ICSA-14-205-02ASiemens SIMATIC WinCC Vulnerabilities (Update A)2014-04-26icsa · 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
ICSA-15-048-02Siemens SIMATIC WinCC 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 (10)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cisa_csaf_ot nvd NVD CVE.org MITRE

published 2014-07-24modified 2026-06-17

references (5)

External citations — patches, advisories, analysis.

scry

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