EUVD-2026-76745
GHSA-4chm-hjh8-jh3r
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Network-accessible API proxy exploited by an authenticated low-privilege user; no scope change, no confidentiality or availability impact - integrity-only from record overwriting.
Primary rating from Vendor (hq).
CVSS VectorVendor: hq
Lifecycle Timeline
3DescriptionCVE.org
A deployment mode intended to expose only read access to stored data proxies a set of application programming interface routes without restricting which request methods are allowed. One such route accepts a request that creates or overwrites a stored record, including an attacker-chosen identifier, using the application's own elevated backend credentials. This allows an authenticated user on a deployment intended to be read-only to forge or overwrite stored records that should not be modifiable in that deployment mode.
AnalysisAI
Integrity bypass in an industrial OT product's read-only deployment mode allows a low-privileged authenticated user to forge or overwrite stored records that the deployment mode is expressly designed to protect from modification. The vulnerability arises because the read-only mode's API proxy layer forwards HTTP requests to backend routes without enforcing HTTP method restrictions, enabling write operations to be carried out using the application's own elevated service-account credentials. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a valid low-privileged account on the affected product's read-only deployment mode - the CVSS PR:L metric confirms authentication is required, meaning anonymous external attackers cannot exploit this directly. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 base score of 7.1 with VI:H reflects meaningful integrity impact but no confidentiality or availability loss - an attacker can forge stored records but cannot directly exfiltrate sensitive data or disrupt process availability through this path alone. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Consult the CISA ICS-CERT advisory ICSA-26-254-01 for the vendor-confirmed patch version and upgrade instructions - no exact fix version is present in the current data set. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all deployments of this industrial OT product in read-only mode and restrict direct API access to trusted administrative systems; implement network segmentation to limit exposure from low-privileged user accounts. …
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Same weakness CWE-862 – Missing Authorization
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External POC / Exploit Code
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