VulnerabilityPublished 12 Aug 2025Updated 13 Aug 2025

CVE-2025-40752: Siemens POWER METER SICAM Q100 · Cleartext Storage of Sensitive Information

Affects Siemens POWER METER SICAM Q100Source CVE Database V5

Not known to be exploited · CVSS 6.2 Medium.

Data as of 26 Oct 2026, 14:05 UTC

CVSS 3.1 base score

6.2Medium

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

EPSS: 0.09% chance of exploitation in 30 days – higher than 0% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

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

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

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

Attack Vector: Local: The vulnerable component is not bound to the network stack and the attacker’s path is via read/write/execute capabilities. Either: the attacker exploits the vulnerability by accessing the target system locally (e.g., keyboard, console), or remotely (e.g., SSH); or the attacker relies on User Interaction by another person to perform actions required to exploit the vulnerability (e.g., tricking a legitimate user into opening a malicious document).
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: High: There is total loss of confidentiality, resulting in all resources within the impacted component being divulged to the attacker. Alternatively, access to only some restricted information is obtained, but the disclosed information presents a direct, serious impact.
Integrity: None: There is no loss of integrity within the impacted component.
Availability: None: There is no impact to availability within the impacted component.

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 12 Aug 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 26 Oct 2026.

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 or the CVSS exploit maturity 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 POWER METER SICAM Q100	Affected =2.60	Fixed in–

AI-suggested

European organizations should take the following specific actions: 1) Immediately audit Siemens SICAM Q100 and Q200 devices to identify affected firmware versions (V2.60 to <V2.62 for Q100, V2.70 to <V2.80 for Q200). 2) Restrict local access to these devices strictly, employing network segmentation and strong access controls to prevent unauthorized physical or network-level access. 3) Where possible, change SMTP account passwords and verify if the device allows storing credentials in encrypted form or supports alternative authentication mechanisms. 4) Monitor SMTP traffic originating from these devices for unusual patterns or unauthorized email sending. 5) Engage with Siemens support to obtain firmware updates or patches that address this vulnerability once available. 6) Implement strict logging and alerting on device access and configuration changes to detect potential exploitation attempts. 7) Train operational staff on the risks of local credential exposure and enforce policies to minimize insider threat risks. 8) Consider deploying compensating controls such as network-level SMTP filtering or outbound mail restrictions to limit the impact of compromised credentials.

Description

A vulnerability has been identified in POWER METER SICAM Q100 (7KG9501-0AA01-0AA1) (All versions >= V2.60 < V2.62), POWER METER SICAM Q100 (7KG9501-0AA01-2AA1) (All versions >= V2.60 < V2.62), POWER METER SICAM Q100 (7KG9501-0AA31-0AA1) (All versions >= V2.60 < V2.62), POWER METER SICAM Q100 (7KG9501-0AA31-2AA1) (All versions >= V2.60 < V2.62), POWER METER SICAM Q200 family (All versions >= V2.70 < V2.80). Affected devices store the password for the SMTP account as plain text. This could allow an authenticated local attacker to extract it and use the configured SMTP service for arbitrary purposes.

Impact

For European organizations, especially those in the energy, utilities, and industrial sectors, this vulnerability poses a significant risk to operational security. Siemens SICAM devices are widely deployed across Europe for power metering and grid management. If an attacker with local access extracts SMTP credentials, they could leverage the mail service to send malicious emails internally or externally, potentially leading to phishing attacks or spreading malware. This could undermine trust in operational communications and facilitate further attacks on critical infrastructure. Although the vulnerability does not directly affect system integrity or availability, the compromise of SMTP credentials can be a stepping stone for broader attacks, including social engineering or lateral movement within OT and IT networks. Given the strategic importance of energy infrastructure in Europe, exploitation could have cascading effects on service reliability and regulatory compliance, especially under frameworks like NIS2. The requirement for local access somewhat limits the attack surface but does not eliminate risk, as insider threats or attackers who have breached perimeter defenses could exploit this vulnerability.

CWE-312Cleartext Storage of Sensitive Information (opens in a new tab)
Base weaknessOWASP Top 10 A06:2025: Insecure Design (opens in a new tab)
The product stores sensitive information in cleartext within a resource that might be accessible to another control sphere.
Implementation · System Configuration · Operation
When storing data in the cloud (e.g., S3 buckets, Azure blobs, Google Cloud Storage, etc.), use the provider's controls to encrypt the data at rest.
Implementation · System Configuration · Operation
In some systems/environments such as cloud, the use of "double encryption" (at both the software and hardware layer) might be required, and the developer might be solely responsible for both layers, instead of shared responsibility with the administrator of the broader system/environment.
OWASP Cheat Sheets
Secure Design Principles (opens in a new tab)
OWASP ASVS 4.0.3
V8.1.6 (opens in a new tab)
V8.2.3 (opens in a new tab)
V8.2.2 (opens in a new tab)
Attack patterns
Retrieve Embedded Sensitive Data (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

cert-portal.siemens.com/productcert/html/ssa-529291.html (opens in a new tab)

Community reviews

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 20 Aug 2025, 01:59 UTC

WeaknessesCWE-312

Technical details

References

Community reviews

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