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TI-2017-01926 Aliases CVE-2017-2684GHSA-h5v3-4rh5-mj9g

Siemens SIMATIC Logon prior to V1.5 SP3 Update 2 could allow an attacker with knowledge…

Priority MEDIUM 43CWE-592Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.0 · NVD. Fix status from CNA.

Summary

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.

Why it matters now

EPSS 0.01987 80th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
—SIMATIC Logon All versions < V1.5 SP3 Update 2SIMATIC Logon All versions < V1.5 SP3 Update 2—No fix listedCNA
  • SIMATIC Logon All versions < V1.5 SP3 Update 2 Vendor— Affected SIMATIC Logon All versions < V1.5 SP3 Update 2 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:siemens:simatic_logon:*:sp3_update_1:*:*:*:*:*:*up to 1.5VulnerableSiemens
  • cpe:2.3:a:siemens:simatic_logon:*:sp3_update_1:*:*:*:*:*:* Versions up to 1.5 Vulnerable ·Siemens

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2017-2684
  2. 2026-10-03 Alias added: GHSA-h5v3-4rh5-mj9g

References

Advisory 1

  • TI-2021-02413 NULL pointer deref in signature_algorithms processing CVSS 3.1MEDIUM 5.9
  • TI-2017-07306 Out-of-bounds write in SIMATIC Logon All versions before V1.6 CVSS 3.0HIGH 7.5

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences