7.1High
Siemens Scalance Lpe9403 Firmware
CVE-2025-40581
A vulnerability has been identified in SCALANCE LPE9403 (6GK5998-3GS00-2AC2) (All versions < V2.1 HF0 with SINEMA Remote Connect Edge Client installed). Affected devices are vulnerable to an authentication bypass. This could allow a non-privileged local attacker to bypass the authentication of the SINEMA Remote Connect Edge Client, and to read and modify the configuration parameters.
What this means for your business
- It affects Siemens Scalance Lpe9403 Firmware. It matters if your company, or a supplier that handles your data, runs it.
- An attacker can use it only with access to the machine itself, with an ordinary user login, and without anyone at your company clicking anything.
- FIRST's prediction model gives it a 0.2% chance of attack attempts being seen in the next 30 days, ranking above 4% of all known flaws.
What to do
- 1Check whether your company or your suppliers run Siemens Scalance Lpe9403 Firmware, and which version. The affected versions are listed further down this page.
- 2If you do, apply the vendor's fix. A patch or vendor advisory has been published.
Not sure if your company is exposed?
Fastnexa’s certified penetration testers can check whether attackers could use this flaw, or others like it, against your websites, apps and network. The full test is free for our first 10 founding clients until 31 December 2026.
Scoring
- CVSS
- 7.1 (v3.1)
- Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N- CVSS v4
- 8.4
- Weakness
- CWE-288
- Assigned by
- productcert@siemens.com
Dates
- Published
- 2025-05-13
- Last modified
- 2026-09-08
- Sources
- NVD
Affected products
- Siemens Scalance Lpe9403 Firmwareall versions
- Siemens Scalance Lpe9403all versions
As listed in the NVD configuration data. Not a statement about your estate.