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PatchSiren cyber security CVE debrief

CVE-2026-94216 ST Engineering iDirect CVE debrief

A vulnerability was determined in ST Engineering iDirect iDX and Evo iDX, affecting the /authorize file of the HTTP Request Handler. This vulnerability can lead to HTTP response splitting through manipulation of the Success argument. The exploit has been publicly disclosed and may be utilized. The validated environment is an EOL X7 (or an un-modelled legacy Evolution 21.x), and current supported releases (X10, X11, Velocity 5.x+) have no validated evidence of impact.

Vendor
ST Engineering iDirect
Product
iDX
CVSS
MEDIUM 5.3
CISA KEV
Not listed in stored evidence
Original CVE published
2026-09-21
Original CVE updated
2026-10-14
Advisory published
2026-09-21
Advisory updated
2026-10-14

Who should care

Defenders responsible for legacy systems, especially those using EOL X7 or Evolution 21.x, should assess exposure and prioritize verification and potential upgrades. This includes operators, platform administrators, vulnerability management teams, and security teams who need to verify exposure, assess potential impact, and plan for remediation.

Why it matters

Defenders should prioritize verifying exposure in legacy systems and assess the feasibility of upgrading to supported versions due to the potential for HTTP response splitting attacks.

  • Potential for HTTP response splitting attacks
  • Verification of exposure in legacy systems
  • Prioritization of upgrades to supported versions

Technical summary

The vulnerability affects the /authorize file of the HTTP Request Handler in ST Engineering iDirect iDX and Evo iDX, allowing for HTTP response splitting through manipulation of the Success argument. This vulnerability can lead to HTTP response splitting attacks, especially in legacy systems such as EOL X7 or un-modelled legacy Evolution 21.x. Current supported releases (X10, X11, Velocity 5.x+) have no validated evidence of impact. Defenders should prioritize verifying exposure in these systems and assess the feasibility of upgrading to supported versions.

Defensive priority

Defenders should prioritize verifying exposure in legacy systems, especially those using EOL X7 or Evolution 21.x, and assess the feasibility of upgrading to supported versions.

Recommended defensive actions

  • Verify exposure in legacy systems, especially those using EOL X7 or Evolution 21.x
  • Assess the feasibility of upgrading to supported versions (X10, X11, Velocity 5.x+)
  • Monitor for potential exploitation attempts
  • Review compensating controls for exposed systems while remediation is scheduled and verified
  • Check relevant monitoring, detection, and logs for exposed assets that need extra review
  • Track exceptions, retest remediated assets, and close the item only after evidence is documented
  • Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record and source item provide details on the vulnerability, its potential impact, and affected products. However, specific details about exploitation are limited. The validated environment is an EOL X7 (or an un-modelled legacy Evolution 21.x), and current supported releases (X10, X11, Velocity 5.x+) have no validated evidence of impact. Defenders should verify exposure in these systems and assess potential upgrades.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-94216 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-94216

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-94216 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-94216

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • ST Engineering iDirect iDX/Evo iDX HTTP Request authorize response splitting

    Unverified legacy reference

    URL: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/94xxx/CVE-2026-94216.json

    cve_program_cvelist_v5

  • Source reference

    Unverified legacy reference

    URL: https://vuldb.com/vuln/408071

    Supplemental source - vdb-entry, technical-description

  • Source reference

    Unverified legacy reference

    URL: https://vuldb.com/vuln/408071/cti

    Supplemental source - signature, permissions-required

  • Source reference

    Unverified legacy reference

    URL: https://vuldb.com/cve/CVE-2026-94216

    Supplemental source - third-party-advisory

  • Source reference

    Unverified legacy reference

    URL: https://vuldb.com/submit/894247

    Supplemental source - third-party-advisory

  • Source reference

    Unverified legacy reference

    URL: https://github.com/dxz0069/WAVLINK-WN530H4-Command-Injection-in-set_add_routing/blob/main/IDIRECT-WEBSERVER-CRLF-OPENREDIRECT-001-vulndb.md

    Supplemental source - exploit

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.