CVE-2025-27396

Q: How do I fix CVE-2025-27396?

Upgrade scalance lpe9403 firmware to 4.0 or later.

Q: Is CVE-2025-27396 being actively exploited?

Not that we know of. CVE-2025-27396 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.42% is the estimated probability that it will be exploited in the next 30 days. That is higher than 35% of all scored CVEs.

Q: How severe is CVE-2025-27396?

CVE-2025-27396 has a CVSS v3 base score of 8.8, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

Q: What does CVE-2025-27396 affect?

Published advisories record a fix for scalance lpe9403 firmware (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

HIGH

8.8

CVSS v3

NVD

Description

A vulnerability has been identified in SCALANCE LPE9403 (6GK5998-3GS00-2AC2) (All versions < V4.0). Affected devices do not properly limit the elevation of privileges required to perform certain valid functionality. This could allow an authenticated lowly-privileged remote attacker to escalate their privileges.

CWE-273

How to fix

Remediation Available

scalance lpe9403 firmwareNVD

Affected:< 4.0Fixed in:4.0CVE-2025-27396derived from NVD

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

0.42%probability of exploitation in 30 days

35thpercentile

Low risk: more likely to be exploited than 35% of all known CVEs.

References

Vendor Advisory1

cert-portal.siemens.com

Related Vulnerabilities

Other CWE-273 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2011-2921	Critical	9.8	83%	-	-
CVE-2024-38813	High	7.5	17%	KEV	Fix
CVE-2017-6972	Critical	9.8	15%	-	-
CVE-2015-0278	High	10.0	3.2%	-	Fix
CVE-2019-18276	High	7.8	2.6%	-	Fix
CVE-2021-36372	Critical	9.8	2.4%	-	Fix

Common questions

How do I fix CVE-2025-27396?

Upgrade scalance lpe9403 firmware to 4.0 or later.

Is CVE-2025-27396 being actively exploited?

Not that we know of. CVE-2025-27396 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.42% is the estimated probability that it will be exploited in the next 30 days. That is higher than 35% of all scored CVEs.

How severe is CVE-2025-27396?

CVE-2025-27396 has a CVSS v3 base score of 8.8, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2025-27396 affect?

Published advisories record a fix for scalance lpe9403 firmware (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-08-22.