CVE-2025-27450Network attack vector

Session-cookie interception via missing Secure attribute

Published Jul 3, 2025 · Updated Jul 3, 2025

Missing cookie protection in MEAC300-FNADE4 0 through 0.16.0 allows remote attackers to intercept PHPSESSID over HTTP. The web application issues multiple cookies, including PHPSESSID, without the Secure attribute, so browsers can resend them on unencrypted HTTP requests. Exploitation requires user interaction to establish an HTTP connection and network positioning that permits request interception; the bounded impact is disclosure of the session identifier.

CVSS severity6.5
Medium
EPSS probability0.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing cookie protection in MEAC300-FNADE4 0 through 0.16.0 allows remote attackers to intercept PHPSESSID over HTTP. The web application issues multiple cookies, including PHPSESSID, without the Secure attribute, so browsers can resend them on unencrypted HTTP requests. Exploitation requires user interaction to establish an HTTP connection and network positioning that permits request interception; the bounded impact is disclosure of the session identifier.

The record

CVE
CVE-2025-27450
Published
Jul 3, 2025
Updated
Jul 3, 2025
Vendor
Endress+Hauser
Product
MEAC300
Classifications
CWE-614, T1557
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 3, 2025CVE publishedPublication date reported by the CVE source.
  2. Jul 3, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=<=0.16.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Endress+Hauser · MEAC300version=0 <=<=0.16.0

Published CVSS scores

6.5SICK AGCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-614Sensitive Cookie in HTTPS Session Without 'Secure' Attribute
T1557Adversary-in-the-Middle

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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