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ICS Log Processor CVE-2026-90455

| EUVDEUVD-2026-76736 MEDIUM
Dependency on Vulnerable Third-Party Component (CWE-1395)
2026-09-11 ics-cert@hq.dhs.gov GHSA-wv2v-v3c6-8438
6.3
CVSS 4.0 · Vendor: hq
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Severity by source

Vendor (hq) PRIMARY
6.3 MEDIUM
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:N/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
vuln.today AI
3.7 LOW

Network vector for outbound HTTP call; AC:H because MITM positioning against a fixed trusted URL is required; C:L only, matching VC:L in provided 4.0 vector.

3.1 AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
4.0 AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (hq).

CVSS VectorVendor: hq

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
X

Lifecycle Timeline

1
Analysis Generated
Sep 11, 2026 - 22:41 vuln.today

DescriptionCVE.org

A prior update that raised a bundled HTTP client library to a version remediating known vulnerabilities was later reverted, reintroducing the earlier, vulnerable version into a log-processing component. The only code path in that component using the library issues a request to a single fixed, trusted vendor URL at initialization and does not process attacker-controlled input through the library, limiting practical exploitability of the reintroduced version in this context.

AnalysisAI

Dependency regression in a log-processing component of an ICS inventory-management product reintroduced a previously remediated, vulnerable HTTP client library version after a security-focused update was reverted. The reintroduced library is used in exactly one code path - an outbound initialization request to a single fixed, vendor-controlled URL - and never processes attacker-supplied input, severely constraining practical exploitability. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Delivery
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Exploit
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Vulnerability AssessmentAI

Exploitation Exploitation requires network-level interception capability (MITM or DNS poisoning) targeting the single outbound HTTP initialization request made by the log-processing component to a fixed, trusted vendor URL. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment Real-world risk is significantly lower than the CVSS 4.0 score of 6.3 might initially suggest for a network-reachable finding. … 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 Re-apply the previously reverted HTTP client library update to restore the patched dependency version. … Detailed patch versions, workarounds, and compensating controls in full report.

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CVE-2026-90455 vulnerability details – vuln.today

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