CVE-2018-13799

mediumpriority · track · 37EPSS 0.023 · 83 %ileEURUUS
grimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
2.25% (83rd) EPSS
CVSS 6.4 · medium
Is it mine?
5 products
Check your exposure
Who says so?
5 sources
cnnvd · enisa_euvd · fstec_bdu · cisa_csaf_ot

EPSS · scored 2026-10-27

A vulnerability has been identified in SIMATIC WinCC OA V3.14 and prior (All versions < V3.14-P021). Improper access control to a data point of the affected product could allow an unauthenticated remote user to escalate its privileges in the context of SIMATIC WinCC OA V3.14. This vulnerability could be exploited by an attacker with network access to port 5678/TCP of the SIMATIC WinCC OA V3.14 server. Successful exploitation requires no user privileges and no user interaction. This vulnerability could allow an attacker to compromise integrity and availability of the SIMATIC WinCC OA system. At the time of advisory publication no public exploitation of this vulnerability was known.

01

remediations

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

A vendor fix is available.

  • FixedSIMATIC WinCC OA V3.14 and priorcisa_csaf_ot

    Update to V3.14-P021 and follow the steps at https://portal.etm.at/patchdownload.php?fp=version_3.14/win64vc12/ReadmeP021.txt for adding of modifying WinCC OA users in AD environments. - Download: https://portal.etm.at/index.php?option=com_content&view=category&id=67&layout=blog&Itemid=80

    https://portal.etm.at/patchdownload.php
  • MitigationSIMATIC WinCC OA V3.14 and priorcisa_csaf_ot

    Siemens has identified the following specific workarounds and mitigations thatcustomers can apply to reduce the risk:allow manual remediation of the vulnerability fixed by WinCC OAV3.14-P021.for maintaining a secured SIMATIC WinCC OA environment. Follow the SIMATIC WinCC OA Security Guideline (available at https://portal.etm.at/index.php?option=com_phocadownload&view=category&id=52:security&Itemid=81)

    https://portal.etm.at/index.php
02

cvss

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

9.1
010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–critical · 6.4–9.1

v2.06.4mediumAV:N/AC:L/Au:N/C:N/I:P/A:Pprimary · NVD / NIST USexploitability 10 · impact 4.9
v3.09.1criticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 5.2
v3.09.1criticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H/E:P/RL:O/RC:Csecondary · CISA US
v3.08.3highCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)
v3.19.1criticalAV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:Hsecondary · FSTEC (BDU) RU
03

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-269USCWE-269USCWE-284US
04

affected products (5)

Products and version ranges known to be affected.

05

advisories (1)

Vendor and ecosystem advisories describing this.

  • ICSA-18-254-04ICSA-18-254-04 Siemens SIMATIC WinCC OA2018-09-11icsa · cisa_csaf_otUS

    CISA recommends users take defensive measures to minimize the exploitation risk of this vulnerability.

06

also known as (4)

Other names and identifiers for this entity.

07

sources

Which sources assert this record, and when.

cnnvdenisa_euvdfstec_bducisa_csaf_otnvdNVDCVE.orgMITRE
published 2018-09-12modified 2026-06-17
08

references (7)

External citations — patches, advisories, analysis.

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