TI-2022-13699 Aliases CVE-2022-31807 GHSA-33j7-6p7h-f87g

Improper signature verification in Siemens Building X - Security Manager Edge Controller

LOW 26CWE-347Published 2025-05-23 · Updated 2025-12-09

Key facts

Attack vector: Local
Privileges required: None
User interaction: None
Attack complexity: Low
Attack requirements: Present
Impact type: Security bypass
Confidentiality · integrity · availability: None · High · None
Fix status: No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-347.

Summary

A vulnerability has been identified in Building X - Security Manager Edge Controller (ACC-AP) (All versions). Affected devices do not properly check the integrity of firmware updates. This could allow a local attacker to upload a maliciously modified firmware onto the device. In a second scenario, a remote attacker who is able to intercept the transfer of a valid firmware from the server to the device could modify the firmware "on the fly".

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00163 5th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

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

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Siemens	Building X - Security Manager Edge Controller (ACC-AP)	all versions	—	No fix listed	CNA

Building X - Security Manager Edge Controller (ACC-AP) VendorSiemens Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 4

CPE	Versions	Role	Vendor
cpe:2.3:o:siemens:sipass_integrated_ac5102_\(acc-g2\)_firmware::::::::	all versions	Vulnerable	Siemens
cpe:2.3:h:siemens:sipass_integrated_ac5102_\(acc-g2\):-:::::::*	not specified by NVD	Running on	Siemens
cpe:2.3:o:siemens:sipass_integrated_acc-ap_firmware::::::::	all versions	Vulnerable	Siemens
cpe:2.3:h:siemens:sipass_integrated_acc-ap:-:::::::*	not specified by NVD	Running on	Siemens

cpe:2.3:o:siemens:sipass_integrated_ac5102_\(acc-g2\)_firmware:*:*:*:*:*:*:*:* Versions all versions 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 all versions Vulnerable ·Siemens
cpe:2.3:h:siemens:sipass_integrated_acc-ap:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2022-31807
2026-10-03 Alias added: GHSA-33j7-6p7h-f87g

References

Advisory 1

https://cert-portal.siemens.com/productcert/html/ssa-367714.html

Other 1

https://cert-portal.siemens.com/productcert/html/ssa-420375.html

TI-2025-20329 Improper input validation in Siemens SiPass integrated AC5102 CVSS 4.0CRITICAL 9.4
TI-2025-20328 Improper input validation in Siemens SiPass integrated AC5102 CVSS 4.0CRITICAL 9.3
TI-2022-13700 Improper input validation in Siemens SiPass integrated AC5102 CVSS 3.1HIGH 7.8

Sources

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