CVE-2025-41222VulnerabilityPublished 8 Jul 2025

CVE-2025-41222: Siemens RUGGEDCOM i800 · Improper Handling of Exceptional Conditions

Affects Siemens RUGGEDCOM i800Source CVE Database V5

Not known to be exploited · CVSS 5.3 Medium.

Data as of 25 Oct 2026, 19:02 UTC

CVSS 3.1 base score

5.3Medium

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

EPSS: 0.3% chance of exploitation in 30 days – higher than 26% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

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

Attack Vector: Network
Attack Complexity: Low
Privileges Required: None
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: None: The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files to carry out an attack.
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 8 Jul 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 i800	Affected =0	Fixed in–

AI-suggested

1. Network Segmentation: Isolate RUGGEDCOM devices on dedicated network segments with strict access controls to limit exposure to untrusted networks. 2. Access Control: Restrict network access to the webserver interface of RUGGEDCOM devices using firewalls, VPNs, or jump hosts to prevent unauthorized access. 3. Monitoring and Detection: Implement network monitoring to detect anomalous TLS handshake patterns or repeated malformed packets targeting these devices. 4. Vendor Updates: Regularly check Siemens advisories for patches or firmware updates addressing this vulnerability and apply them promptly once available. 5. Incident Response Planning: Prepare response procedures for DoS incidents affecting RUGGEDCOM devices, including failover mechanisms and manual control options. 6. Harden TLS Configuration: Where possible, configure devices to use robust TLS versions and cipher suites, and disable legacy protocols that may be more susceptible to malformed handshake exploitation. 7. Network Access Controls: Employ intrusion prevention systems (IPS) or deep packet inspection (DPI) to block malformed TLS handshake attempts targeting these devices. 8. Vendor Engagement: Engage Siemens support for guidance and potential workarounds until patches are released. These steps go beyond generic advice by focusing on network-level controls, device-specific configurations, and operational preparedness tailored to the industrial context of RUGGEDCOM devices.

Description

A vulnerability has been identified in RUGGEDCOM i800 (All versions), RUGGEDCOM i801 (All versions), RUGGEDCOM i802 (All versions), RUGGEDCOM i803 (All versions), RUGGEDCOM M2100 (All versions), RUGGEDCOM M2200 (All versions), RUGGEDCOM M969 (All versions), RUGGEDCOM RMC30 (All versions), RUGGEDCOM RMC8388 V4.X (All versions), RUGGEDCOM RMC8388 V5.X (All versions < V5.10.0), RUGGEDCOM RP110 (All versions), RUGGEDCOM RS1600 (All versions), RUGGEDCOM RS1600F (All versions), RUGGEDCOM RS1600T (All versions), RUGGEDCOM RS400 (All versions), RUGGEDCOM RS401 (All versions), RUGGEDCOM RS416 (All versions), RUGGEDCOM RS416P (All versions), RUGGEDCOM RS416Pv2 V4.X (All versions), RUGGEDCOM RS416Pv2 V5.X (All versions < V5.10.0), RUGGEDCOM RS416v2 V4.X (All versions), RUGGEDCOM RS416v2 V5.X (All versions < V5.10.0), RUGGEDCOM RS8000 (All versions), RUGGEDCOM RS8000A (All versions), RUGGEDCOM RS8000H (All versions), RUGGEDCOM RS8000T (All versions), RUGGEDCOM RS900 (All versions), RUGGEDCOM RS900 (32M) V4.X (All versions), RUGGEDCOM RS900 (32M) V5.X (All versions < V5.10.0), RUGGEDCOM RS900G (All versions), RUGGEDCOM RS900G (32M) V4.X (All versions), RUGGEDCOM RS900G (32M) V5.X (All versions < V5.10.0), RUGGEDCOM RS900GP (All versions), RUGGEDCOM RS900L (All versions), RUGGEDCOM RS900M-GETS-C01 (All versions), RUGGEDCOM RS900M-GETS-XX (All versions), RUGGEDCOM RS900M-STND-C01 (All versions), RUGGEDCOM RS900M-STND-XX (All versions), RUGGEDCOM RS900W (All versions), RUGGEDCOM RS910 (All versions), RUGGEDCOM RS910L (All versions), RUGGEDCOM RS910W (All versions), RUGGEDCOM RS920L (All versions), RUGGEDCOM RS920W (All versions), RUGGEDCOM RS930L (All versions), RUGGEDCOM RS930W (All versions), RUGGEDCOM RS940G (All versions), RUGGEDCOM RS969 (All versions), RUGGEDCOM RSG2100 (All versions), RUGGEDCOM RSG2100 (32M) V4.X (All versions), RUGGEDCOM RSG2100 (32M) V5.X (All versions < V5.10.0), RUGGEDCOM RSG2100P (All versions), RUGGEDCOM RSG2100P (32M) V4.X (All versions), RUGGEDCOM RSG2100P (32M) V5.X (All versions < V5.10.0), RUGGEDCOM RSG2200 (All versions), RUGGEDCOM RSG2288 V4.X (All versions), RUGGEDCOM RSG2288 V5.X (All versions < V5.10.0), RUGGEDCOM RSG2300 V4.X (All versions), RUGGEDCOM RSG2300 V5.X (All versions < V5.10.0), RUGGEDCOM RSG2300P V4.X (All versions), RUGGEDCOM RSG2300P V5.X (All versions < V5.10.0), RUGGEDCOM RSG2488 V4.X (All versions), RUGGEDCOM RSG2488 V5.X (All versions < V5.10.0), RUGGEDCOM RSG907R (All versions < V5.10.0), RUGGEDCOM RSG908C (All versions < V5.10.0), RUGGEDCOM RSG909R (All versions < V5.10.0), RUGGEDCOM RSG910C (All versions < V5.10.0), RUGGEDCOM RSG920P V4.X (All versions), RUGGEDCOM RSG920P V5.X (All versions < V5.10.0), RUGGEDCOM RSL910 (All versions < V5.10.0), RUGGEDCOM RST2228 (All versions < V5.10.0), RUGGEDCOM RST2228P (All versions < V5.10.0), RUGGEDCOM RST916C (All versions < V5.10.0), RUGGEDCOM RST916P (All versions < V5.10.0). Affected devices do not properly handle malformed TLS handshake messages. This could allow an attacker with network access to the webserver to cause a denial of service resulting in the web server and the device to crash.

Impact

For European organizations, especially those in critical infrastructure sectors such as energy, transportation, manufacturing, and utilities, this vulnerability poses a risk of operational disruption. Siemens RUGGEDCOM devices are commonly deployed in industrial control systems (ICS) and operational technology (OT) networks across Europe. A successful DoS attack could cause network outages, loss of monitoring and control capabilities, and potential cascading effects on industrial processes. While the vulnerability does not allow data theft or manipulation, the availability impact can lead to safety risks, financial losses, and regulatory non-compliance, particularly under EU directives like NIS2 that mandate cybersecurity resilience for essential services. The fact that no authentication or user interaction is required increases the risk, as attackers can exploit the vulnerability remotely if they gain network access. This is particularly concerning in environments where network segmentation is weak or remote access is enabled without adequate controls. The medium CVSS score reflects the limited scope to availability impact only, but the critical nature of affected systems elevates the practical severity for European critical infrastructure operators.

Summary

CVE-2025-41222 is a vulnerability identified in a broad range of Siemens RUGGEDCOM devices, including models i800, i801, i802, i803, M2100, M2200, M969, RMC30, RMC8388, RP110, RS1600 series, RS400 series, RS8000 series, RS900 series, RS910 series, RS920 series, RS930 series, RS940G, RS969, RSG2100 series, RSG2200, RSG2288, RSG2300 series, RSG2488, RSG907R, RSG908C, RSG909R, RSG910C, RSG920P, RSL910, RST2228 series, and RST916 series. The vulnerability stems from improper handling of exceptional conditions, specifically malformed TLS handshake messages by the embedded webserver on these devices. When an attacker with network access sends malformed TLS handshake messages, the device fails to handle these exceptions correctly, leading to a denial of service (DoS) condition. This DoS causes the webserver and the device itself to crash, potentially disrupting network communications and device operations. The vulnerability is classified under CWE-755, which relates to improper handling of exceptional conditions. The CVSS v3.1 base score is 5.3 (medium severity), with vector AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L, indicating network attack vector, low attack complexity, no privileges or user interaction required, unchanged scope, no confidentiality or integrity impact, but availability impact due to service disruption. No known exploits are currently reported in the wild, and no patches are linked yet. The affected devices are widely used in industrial and critical infrastructure networks, often deployed in harsh environments requiring ruggedized communication equipment. The vulnerability could be exploited remotely by unauthenticated attackers with network access to the device's webserver port, making it a significant risk for operational continuity.

CWE-755Improper Handling of Exceptional Conditions (opens in a new tab)
Class weaknessLikelihood of exploit: MediumOWASP Top 10 A10:2025: Mishandling of Exceptional Conditions (opens in a new tab)
The product does not handle or incorrectly handles an exceptional condition.
MITRE discourages mapping vulnerabilities to this broad entry; the root cause is usually a more specific weakness.
OWASP Cheat Sheets
Logging (opens in a new tab)
Error Handling (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

cert-portal.siemens.com/productcert/html/ssa-083019.html (opens in a new tab)

Community reviews

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 8 Jul 2025, 10:56 UTC

WeaknessesCWE-755

Technical details

References

Community reviews

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