CVE-2025-27454VulnerabilityPublished 3 Jul 2025

CVE-2025-27454: Endress+Hauser MEAC300-FNADE4 · Cross-Site Request Forgery (CSRF)

Affects Endress+Hauser MEAC300-FNADE4Source 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: 0.2% chance of exploitation in 30 days – higher than 10% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

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

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

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: Required: Successful exploitation of this vulnerability requires a user to take some action before the vulnerability can be exploited.
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: Low: Modification of data is possible, but the attacker does not have control over the consequence of a modification, or the amount of modification is limited. The data modification does not have a direct, serious impact on 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 3 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
Endress+Hauser Endress+Hauser MEAC300-FNADE4	Affected =0	Fixed in–

AI-suggested

To mitigate this CSRF vulnerability effectively, European organizations should implement the following specific measures: 1) Network Segmentation: Isolate the MEAC300-FNADE4 devices on dedicated industrial control networks with strict access controls to limit exposure to untrusted networks and reduce the risk of web-based attacks. 2) Web Interface Access Controls: Restrict access to the device's web management interface to trusted IP addresses and enforce strong authentication mechanisms, including multi-factor authentication where possible. 3) User Training and Awareness: Educate users with access to these devices about the risks of phishing and malicious websites that could trigger CSRF attacks, emphasizing cautious browsing behavior on devices with access to industrial systems. 4) Web Proxy and Filtering: Deploy web proxies or filtering solutions that block access to known malicious sites and inspect outbound web traffic for suspicious requests targeting the device's management interface. 5) Vendor Coordination: Engage with Endress+Hauser to obtain patches or firmware updates that implement anti-CSRF protections such as synchronizer tokens or origin header validation. Until patches are available, consider disabling web management interfaces if operationally feasible or using alternative secure management methods. 6) Monitoring and Logging: Enable detailed logging on the devices and network to detect unusual configuration changes or access patterns indicative of CSRF exploitation attempts. 7) Incident Response Planning: Prepare response procedures specifically for industrial control system compromises, including rapid isolation and recovery steps.

Description

The application is vulnerable to cross-site request forgery. An attacker can trick a valid, logged in user into submitting a web request that they did not intend. The request uses the victim's browser's saved authorization to execute the request.

Impact

For European organizations, particularly those operating in industrial sectors such as manufacturing, energy, water treatment, and chemical processing, this vulnerability could lead to unauthorized manipulation of critical instrumentation and control systems. Altered device settings or commands could cause inaccurate measurements, process disruptions, or unsafe operating conditions, potentially leading to production downtime, safety incidents, or regulatory non-compliance. Since the attack requires a logged-in user to interact with a malicious web page, social engineering or phishing campaigns could be used to target employees with access to these devices. The impact is heightened in environments where these devices are accessible via corporate networks or remotely, increasing the attack surface. Additionally, the lack of confidentiality impact means data theft is unlikely, but integrity compromises can have severe operational consequences in industrial control systems. The medium severity rating suggests that while the vulnerability is not immediately critical, it should be addressed promptly to prevent escalation or chaining with other vulnerabilities.

Summary

CVE-2025-27454 is a medium-severity vulnerability classified as CWE-352, indicating a Cross-Site Request Forgery (CSRF) weakness in the Endress+Hauser MEAC300-FNADE4 product. CSRF vulnerabilities occur when an attacker tricks an authenticated user into submitting a web request that they did not intend to make, leveraging the user's active session and browser-stored credentials to perform unauthorized actions. In this case, the affected product is an industrial automation device or system component from Endress+Hauser, a vendor specializing in measurement instrumentation and automation solutions. The vulnerability allows remote attackers to induce a logged-in user to execute unintended commands on the MEAC300-FNADE4 device via crafted web requests, without requiring prior authentication or elevated privileges. The CVSS 3.1 score of 4.3 reflects a network attack vector with low complexity, no privileges required, but requiring user interaction, and resulting in limited integrity impact without affecting confidentiality or availability. This means attackers cannot directly steal data or cause denial of service but can alter device configurations or operational parameters, potentially disrupting industrial processes or causing erroneous measurements. No known exploits are currently reported in the wild, and no patches have been linked yet, indicating that mitigation may rely on compensating controls until a vendor fix is available. The vulnerability's root cause is the lack of anti-CSRF protections such as tokens or origin validation in the device's web interface, allowing malicious websites or emails to induce state-changing requests when visited by an authenticated user. Given the critical role of Endress+Hauser devices in industrial environments, this vulnerability poses a risk to operational integrity and safety if exploited.

CWE-352Cross-Site Request Forgery (CSRF) (opens in a new tab)
Compound weaknessLikelihood of exploit: MediumCWE Top 25 (2025): #3OWASP Top 10 A01:2025: Broken Access Control (opens in a new tab)
The web application does not, or cannot, sufficiently verify whether a request was intentionally provided by the user who sent the request, which could have originated from an unauthorized actor.
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.
Implementation
Ensure that the application is free of cross-site scripting issues (CWE-79), because most CSRF defenses can be bypassed using attacker-controlled script.
Architecture and Design
Generate a unique nonce for each form, place the nonce into the form, and verify the nonce upon receipt of the form. Be sure that the nonce is not predictable (CWE-330).
OWASP Cheat Sheets
REST Assessment (opens in a new tab)
REST Security (opens in a new tab)
Cross-Site Request Forgery Prevention (opens in a new tab)
Authorization Testing Automation (opens in a new tab)
Insecure Direct Object Reference Prevention (opens in a new tab)
OWASP ASVS 4.0.3
V13.2.3 (opens in a new tab)
V4.2.2 (opens in a new tab)
V13.3.2 (opens in a new tab)
Attack patterns
JSON Hijacking (aka JavaScript Hijacking) (opens in a new tab)
Cross-Domain Search Timing (opens in a new tab)
Cross Site Identification (opens in a new tab)
Cross Site Request Forgery (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 3 Jul 2025, 11:58 UTC

WeaknessesCWE-352

Technical details

References

Community reviews

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