SB2025091225 - Multiple vulnerabilities in Siemens User Management Component (UMC)

Description

This security bulletin contains information about 4 secuirty vulnerabilities.

1) Stack-based buffer overflow (CVE-ID: CVE-2025-40795)

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error in the integrated UMC component. A remote unauthenticated attacker can trigger stack-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

2) Out-of-bounds read (CVE-ID: CVE-2025-40796)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary condition in the integrated UMC component. A remote attacker can trigger an out-of-bounds read error and cause a denial of service condition on the system.

3) Out-of-bounds read (CVE-ID: CVE-2025-40797)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary condition in the integrated UMC component. A remote attacker can trigger an out-of-bounds read error and cause a denial of service condition on the system.

4) Out-of-bounds read (CVE-ID: CVE-2025-40798)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary condition in the integrated UMC component. A remote attacker can trigger an out-of-bounds read error and cause a denial of service condition on the system.

Remediation

Install update from vendor's website.

References

• https://cert-portal.siemens.com/productcert/html/ssa-722410.html
• https://www.cisa.gov/news-events/ics-advisories/icsa-25-254-07