CVE-2026-25789 — HIGH (7.1)

Vulnerability Description

Affected devices do not properly validate and sanitize filenames on the Firmware Update page. This could allow a remote attacker to social engineer the user into selecting the modified firmware file to be uploaded. This would result in malitcious JavaScript execution in the context of the authenticated user's session without requiring the file to be uploaded, potentially leading to session hijacking or credential theft.

CVSS Score

7.1

HIGH

CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Related Weaknesses (CWE)

CWE-79

References

https://cert-portal.siemens.com/productcert/html/ssa-688146.html

FAQ

What is CVE-2026-25789?

CVE-2026-25789 is a vulnerability with a CVSS score of 7.1 (HIGH). Affected devices do not properly validate and sanitize filenames on the Firmware Update page. This could allow a remote attacker to social engineer the user into selecting the modified firmware file ...

How severe is CVE-2026-25789?

CVE-2026-25789 has been rated HIGH with a CVSS base score of 7.1/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-25789?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.