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No exploitation reportedFix available

CVE-2018-13799

No exploitation reported by the sources we read.

  • Published2018-09-12
  • WeaknessCWE-269

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

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.

Timeline

dates in UTC
  1. 2018-09-1213:29CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2018-13799?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2018-13799?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Siemens simatic wincc open architecture
BranchAffectedFixed in
3.14≤ 3.14no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Vendor advisories

  • ICSA-18-254-04 CISA1 known affected

    ICSA-18-254-04 Siemens SIMATIC WinCC OA

    SIMATIC WinCC OA V3.14 and prior

Full record on NVD

Fix

  1. Vendor fix CISA ICSA-18-254-04 · 1 productUpdate 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
  2. Mitigation from the vendor CISA ICSA-18-254-04 · 1 productSiemens 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. The steps described at https://portal.etm.at/patchdo…
  3. Mitigation from the vendor CISA ICSA-18-254-04 · 1 productSiemens 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 (avai…
  4. Mitigation from the vendor CISA ICSA-18-254-04 · 1 productSiemens 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. Apply Defense-in-Depth: https://www.siemens.com/cert…

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub

Sources

  • NVDCVSS 3.09.1read 2026-10-23
  • NVDCVSS 2.06.4read 2026-10-23
  • CNAweakness (CWE)CWE-269read 2026-10-23
  • FIRST EPSSEPSS score2.3 %2026-10-22

Technical details

CVSS v3 Vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Published
2018-09-12
Last Modified
2026-06-17
NVD status
Modified

Frequently asked questions

What is CVE-2018-13799?

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.

Is CVE-2018-13799 actively exploited?

Active exploitation of CVE-2018-13799 has not been confirmed. Its EPSS score was 2.3% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2018-13799?

CVE-2018-13799 has a CVSS v3 base score of 9.1 (CRITICAL severity), with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H.

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