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No exploitation reportedFix available

CVE-2017-2684

No exploitation reported by the sources we read.

  • Published2017-02-22
  • WeaknessCWE-592

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

Siemens SIMATIC Logon prior to V1.5 SP3 Update 2 could allow an attacker with knowledge of a valid user name, and physical or network access to the affected system, to bypass the application-level authentication.

Timeline

dates in UTC
  1. 2017-02-2202:59CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 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-2017-2684?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2017-2684?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 logon
BranchAffectedFixed in
1.5≤ 1.5no 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-17-045-03 CISA6 known affected

    ICSA-17-045-03 Siemens SIMATIC Authentication Bypass (Update D)

    SIMATIC Logon · SIMATIC WinCC · SIMATIC WinCC Runtime Professional · +3 more

Full record on NVD

Fix

  1. Vendor fix CISA ICSA-17-045-03 · 1 productUpdate to V1.5 SP3 Update 2 - Download: https://support.industry.siemens.com/cs/ww/en/view/109744966
  2. Vendor fix CISA ICSA-17-045-03 · 1 productInstall SIMATIC Logon update (can be installed without WinCC update, see compatibility note on download page) - Download: https://support.industry.siemens.com/cs/ww/en/view/109744966
  3. Vendor fix CISA ICSA-17-045-03 · 1 productInstall SIMATIC Logon update (can be installed without WinCC Runtime Professional update, see compatibility note on download page) - Download: https://support.industry.siemens.com/cs/ww/en/view/109744966
  4. Vendor fix CISA ICSA-17-045-03 · 1 productInstall SIMATIC Logon update (can be installed without PCS 7 update, see compatibility note on download page) - Download: https://support.industry.siemens.com/cs/ww/en/view/109744966
  5. Vendor fix CISA ICSA-17-045-03 · 1 productInstall SIMATIC Logon update (can be installed without PDM update, see compatibility note on download page) - Download: https://support.industry.siemens.com/cs/ww/en/view/109744966
  6. Vendor fix CISA ICSA-17-045-03 · 1 productInstall SIMATIC Logon update (can be installed without IT Production Suite update, see compatibility note on download page) - Download: https://support.industry.siemens.com/cs/ww/en/view/109744966

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 3.09read 2026-10-23
  • NVDCVSS 2.06.8read 2026-10-23
  • CNAweakness (CWE)CWE-592read 2026-10-23
  • FIRST EPSSEPSS score2.0 %2026-10-23

Technical details

CVSS v3 Vector
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
Published
2017-02-22
Last Modified
2026-06-17
NVD status
Modified

Frequently asked questions

What is CVE-2017-2684?

Siemens SIMATIC Logon prior to V1.5 SP3 Update 2 could allow an attacker with knowledge of a valid user name, and physical or network access to the affected system, to bypass the application-level authentication.

Is CVE-2017-2684 actively exploited?

Active exploitation of CVE-2017-2684 has not been confirmed. Its EPSS score was 2.0% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2017-2684?

CVE-2017-2684 has a CVSS v3 base score of 9 (CRITICAL severity), with vector string CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H.

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