CVE-2026-25789 | THREATINT

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.

PUBLISHED Reserved 2026-02-05 | Published 2026-05-12 | Updated 2026-05-12 | Assigner siemens

HIGH: 7.1CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H

HIGH: 7.2CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:A/VC:L/VI:H/VA:H/SC:L/SI:H/SA:H

Problem types

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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References

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

cve.org (CVE-2026-25789)

nvd.nist.gov (CVE-2026-25789)

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