Read the docs
TI-2025-20328 Aliases CVE-2025-27493GHSA-vx36-4cp6-8qcp

Improper input validation in Siemens SiPass integrated AC5102

Priority MEDIUM 41CWE-20Published · Updated

Key facts

Attack vector
Local
Privileges required
High
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

A vulnerability has been identified in SiPass integrated AC5102 (ACC-G2) (All versions < V6.4.9), SiPass integrated ACC-AP (All versions < V6.4.9). Affected devices improperly sanitize user input for specific commands on the telnet command line interface. This could allow an authenticated local administrator to escalate privileges by injecting arbitrary commands that are executed with root privileges.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00178 7th percentileScored 2026-11-07
Fix Fixed SiPass integrated AC5102 (ACC-G2) (Siemens): V6.4.9SiPass integrated ACC-AP (Siemens): V6.4.9

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
SiemensSiPass integrated AC5102 (ACC-G2)before V6.4.9V6.4.9Patch availableCNA
SiemensSiPass integrated ACC-APbefore V6.4.9V6.4.9Patch availableCNA
  • SiPass integrated AC5102 (ACC-G2) VendorSiemens Affected before V6.4.9 Fixed in V6.4.9 Patch available CNA
  • SiPass integrated ACC-AP VendorSiemens Affected before V6.4.9 Fixed in V6.4.9 Patch available CNA

CPE configurations NVD · 4

CPEVersionsRoleVendor
cpe:2.3:o:siemens:sipass_integrated_ac5102_\(acc-g2\)_firmware:*:*:*:*:*:*:*:*before 6.4.9VulnerableSiemens
cpe:2.3:h:siemens:sipass_integrated_ac5102_\(acc-g2\):-:*:*:*:*:*:*:*not specified by NVDRunning onSiemens
cpe:2.3:o:siemens:sipass_integrated_acc-ap_firmware:*:*:*:*:*:*:*:*before 6.4.9VulnerableSiemens
cpe:2.3:h:siemens:sipass_integrated_acc-ap:-:*:*:*:*:*:*:*not specified by NVDRunning onSiemens
  • cpe:2.3:o:siemens:sipass_integrated_ac5102_\(acc-g2\)_firmware:*:*:*:*:*:*:*:* Versions before 6.4.9 Vulnerable ·Siemens
  • cpe:2.3:h:siemens:sipass_integrated_ac5102_\(acc-g2\):-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
  • cpe:2.3:o:siemens:sipass_integrated_acc-ap_firmware:*:*:*:*:*:*:*:* Versions before 6.4.9 Vulnerable ·Siemens
  • cpe:2.3:h:siemens:sipass_integrated_acc-ap:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens

Remediation

  • Fix · CNA SiPass integrated AC5102 (ACC-G2) (Siemens) Fixed in V6.4.9
  • Fix · CNA SiPass integrated ACC-AP (Siemens) Fixed in V6.4.9

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Siemens SiPass integrated AC5102 (ACC-G2), SiPass integrated ACC-AP V6.4.9

    2 records Highest priority Priority MEDIUM 2 MEDIUM

    Other records, highest priority first

    • TI-2025-20329 Improper input validation in Siemens SiPass integrated AC5102Priority MEDIUM 43
    Show all 2 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-27493
  2. 2026-10-03 Alias added: GHSA-vx36-4cp6-8qcp

References

Advisory 1

  • TI-2025-20329 Improper input validation in Siemens SiPass integrated AC5102 CVSS 4.0CRITICAL 9.4
  • TI-2022-13700 Improper input validation in Siemens SiPass integrated AC5102 CVSS 3.1HIGH 7.8
  • TI-2022-13699 Improper signature verification in Siemens Building X - Security Manager Edge Controller CVSS 4.0MEDIUM 5.9

Sources

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