CVE-2025-40568VulnerabilityPublished 10 Jun 2025Updated 13 Jan 2026

CVE-2025-40568: Siemens RUGGEDCOM RST2428P · Incorrect Authorization

Affects Siemens RUGGEDCOM RST2428PSource CVE Database V5

Not known to be exploited · CVSS 4.3 Medium.

Data as of 25 Oct 2026, 19:02 UTC

CVSS 3.1 base score

4.3Medium

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 0.5% chance of exploitation in 30 days – higher than 43% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

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

Attack Vector: Network
Attack Complexity: Low
Privileges Required: Low
User Interaction: None
Scope: Unchanged
Confidentiality: None
Integrity: None
Availability: Low

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Network: The vulnerable component is bound to the network stack and the set of possible attackers extends beyond the other options listed, up to and including the entire Internet. Such a vulnerability is often termed 'remotely exploitable' and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: Low: The attacker is authorized with (i.e., requires) privileges that provide basic user capabilities that could normally affect only settings and files owned by a user. Alternatively, an attacker with Low privileges may have the ability to cause an impact only to non-sensitive resources.
User Interaction: None: The vulnerable system can be exploited without any interaction from any user.
Scope: Unchanged: An exploited vulnerability can only affect resources managed by the same security authority. In this case, the vulnerable component and the impacted component are either the same, or both are managed by the same security authority.
Confidentiality: None: There is no loss of confidentiality within the impacted component.
Integrity: None: There is no loss of integrity within the impacted component.
Availability: Low: Performance is reduced or there are interruptions in resource availability. Even if repeated exploitation of the vulnerability is possible, the attacker does not have the ability to completely deny service to legitimate users. The resources in the impacted component are either partially available all of the time, or fully available only some of the time, but overall there is no direct, serious consequence to the impacted component.

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 10 Jun 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-25.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Affected software

Product	Affected	Fixed in
Siemens RUGGEDCOM RST2428P	Affected =0	Fixed in–

AI-suggested

1. Upgrade all affected Siemens RUGGEDCOM RST2428P and SCALANCE devices to firmware version 3.2 or later as soon as Siemens releases the patch. 2. Until patches are available, restrict or disable guest role access on the web interface to prevent low-privilege users from exploiting the session termination flaw. 3. Implement strict access controls and network segmentation to limit access to device management interfaces only to trusted administrators and management systems. 4. Monitor device logs and network traffic for unusual session termination events or repeated login attempts that could indicate exploitation attempts. 5. Employ multi-factor authentication (MFA) for device management interfaces to reduce the risk posed by compromised credentials. 6. Conduct regular audits of user roles and permissions to ensure that only necessary privileges are assigned. 7. Coordinate with Siemens support and subscribe to their security advisories for timely updates and patches. 8. Consider deploying intrusion detection systems (IDS) tailored for ICS/OT environments to detect anomalous activities related to session management.

Description

A vulnerability has been identified in RUGGEDCOM RST2428P (6GK6242-6PA00) (All versions < V3.2), SCALANCE XCH328 (6GK5328-4TS01-2EC2) (All versions < V3.2), SCALANCE XCM324 (6GK5324-8TS01-2AC2) (All versions < V3.2), SCALANCE XCM328 (6GK5328-4TS01-2AC2) (All versions < V3.2), SCALANCE XCM332 (6GK5332-0GA01-2AC2) (All versions < V3.2), SCALANCE XRH334 (24 V DC, 8xFO, CC) (6GK5334-2TS01-2ER3) (All versions < V3.2), SCALANCE XRM334 (230 V AC, 12xFO) (6GK5334-3TS01-3AR3) (All versions < V3.2), SCALANCE XRM334 (230 V AC, 8xFO) (6GK5334-2TS01-3AR3) (All versions < V3.2), SCALANCE XRM334 (230V AC, 2x10G, 24xSFP, 8xSFP+) (6GK5334-5TS01-3AR3) (All versions < V3.2), SCALANCE XRM334 (24 V DC, 12xFO) (6GK5334-3TS01-2AR3) (All versions < V3.2), SCALANCE XRM334 (24 V DC, 8xFO) (6GK5334-2TS01-2AR3) (All versions < V3.2), SCALANCE XRM334 (24V DC, 2x10G, 24xSFP, 8xSFP+) (6GK5334-5TS01-2AR3) (All versions < V3.2), SCALANCE XRM334 (2x230 V AC, 12xFO) (6GK5334-3TS01-4AR3) (All versions < V3.2), SCALANCE XRM334 (2x230 V AC, 8xFO) (6GK5334-2TS01-4AR3) (All versions < V3.2), SCALANCE XRM334 (2x230V AC, 2x10G, 24xSFP, 8xSFP+) (6GK5334-5TS01-4AR3) (All versions < V3.2). An internal session termination functionality in the web interface of affected products contains an incorrect authorization check vulnerability. This could allow an authenticated remote attacker with "guest" role to terminate legitimate users' sessions.

Impact

For European organizations, especially those in critical infrastructure sectors such as energy, manufacturing, transportation, and utilities, this vulnerability poses a risk of operational disruption. Siemens RUGGEDCOM and SCALANCE devices are widely deployed in industrial control systems (ICS) and operational technology (OT) networks across Europe. An attacker exploiting this flaw could cause denial of service by terminating sessions of legitimate administrators or operators, potentially delaying response times or interrupting monitoring and control activities. Although the vulnerability does not allow data theft or system manipulation, the loss of availability in critical network devices can cascade into broader operational impacts, including safety risks and financial losses. The requirement for authentication limits the attack surface but insider threats or compromised credentials could be leveraged. The lack of known exploits reduces immediate risk but does not eliminate the threat, especially as attackers often develop exploits after vulnerability disclosure. Organizations relying on these Siemens devices should consider this vulnerability a medium risk to availability and operational continuity.

Summary

CVE-2025-40568 is a vulnerability classified under CWE-863 (Incorrect Authorization) found in Siemens RUGGEDCOM RST2428P and various SCALANCE X-series devices, including XCH328, XCM324, XCM328, XCM332, XRH334, and multiple variants of XRM334. All affected versions are those prior to firmware version 3.2. The vulnerability resides in the web interface's internal session termination functionality, where the authorization checks are improperly implemented. Specifically, an attacker authenticated with a 'guest' role—which typically has limited privileges—can exploit this flaw to terminate sessions of legitimate users remotely. This could disrupt ongoing management or operational activities by forcing users to be logged out unexpectedly. The CVSS v3.1 score is 4.3 (medium severity), reflecting that the attack vector is network-based (AV:N), requires low privileges (PR:L), no user interaction (UI:N), and impacts only availability (A:L) without affecting confidentiality or integrity. The scope remains unchanged (S:U), meaning the impact is limited to the vulnerable component. No public exploits or active exploitation have been reported yet. The vulnerability primarily threatens availability by causing denial of service to legitimate users managing critical industrial network devices.

CWE-863Incorrect Authorization (opens in a new tab)
Class weaknessLikelihood of exploit: HighCWE Top 25 (2025): #17OWASP Top 10 A01:2025: Broken Access Control (opens in a new tab)
The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.
Architecture and Design
Divide the product into anonymous, normal, privileged, and administrative areas. Reduce the attack surface by carefully mapping roles with data and functionality. Use role-based access control (RBAC) to enforce the roles at the appropriate boundaries.
Architecture and Design
Ensure that access control checks are performed related to the business logic. These checks may be different than the access control checks that are applied to more generic resources such as files, connections, processes, memory, and database records.
Architecture and Design · Libraries or Frameworks
Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
OWASP Cheat Sheets
Authorization (opens in a new tab)
OWASP ASVS 4.0.3
V8.3.8 (opens in a new tab)
V13.4.2 (opens in a new tab)
V7.2.2 (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

cert-portal.siemens.com/productcert/html/ssa-693776.html (opens in a new tab)

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 14 Jan 2026, 00:44 UTC

WeaknessesCWE-863

Technical details

References

Community reviews

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