# CVE-2026-119746: ProSoft ICX35 Login Lockout Bypass via Client-Side Cookies

Status: published. Published: 2026-11-04. Updated: 2026-11-04.

ProSoft Technology ICX35 devices (X35-HWC-A and ICX35-HWC-E) contain a login lockout bypass in the integrated module web page. The account lockout mechanism that restricts repeated failed authentication attempts is enforced in client-side JavaScript, so a remote attacker can reset the lockout and continue submitting password guesses by deleting the relevant browser cookies, defeating the brute-force protection. This vulnerability has been addressed in version 1.14.158.

## Remediation

- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: VulnCheck) — https://assets.belden.com/asset/3be80067-b211-423d-9be4-4e31bd43fbc9/PSIRT-9-Login-Lockout-Resets-in-ICX35.pdf

## Affected products and versions

- ProSoft Technology / X35-HWC-A: ≥ 0; ≤ 1.14.153 (affected, semver); 1.14.158 (unaffected, semver). Source: CNA: VulnCheck
- ProSoft Technology / ICX35-HWC-E: ≥ 0; ≤ 1.14.153 (affected, semver); 1.14.158 (unaffected, semver). Source: CNA: VulnCheck

## Severity and prioritization

- CVSS 4.0: 8.2 (high); CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N; source: CNA: VulnCheck

- CVSS 3.1: 5.9 (medium); CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N; source: CNA: VulnCheck

- CVSS 4.0: 8.2 (high); CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/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; source: NVD: disclosure@vulncheck.com

- CVSS 3.1: 5.9 (medium); CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N; source: NVD: disclosure@vulncheck.com

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-307, CWE-602

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://assets.belden.com/asset/3be80067-b211-423d-9be4-4e31bd43fbc9/PSIRT-9-Login-Lockout-Resets-in-ICX35.pdf (CNA: VulnCheck; vendor-advisory, patch)

- https://www.vulncheck.com/advisories/prosoft-icx35-login-lockout-bypass-via-client-side-cookies (CNA: VulnCheck; third-party-advisory)

- https://assets.belden.com/asset/3be80067-b211-423d-9be4-4e31bd43fbc9/PSIRT-9-Login-Lockout-Resets-in-ICX35.pdf (disclosure@vulncheck.com)

- https://www.vulncheck.com/advisories/prosoft-icx35-login-lockout-bypass-via-client-side-cookies (disclosure@vulncheck.com)

## Provenance

- CNA: VulnCheck: https://www.cve.org/CVERecord?id=CVE-2026-119746; retrieved 2026-11-04; source updated 2026-11-04

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-119746; retrieved 2026-11-04; source updated 2026-11-04

Revision: d8e613a12a881d23deb7caec90f588e92e8b52d801c113f95ed84396e1aca670

Canonical: https://y2.dev/cve/CVE-2026-119746

## Agent and API access

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- Public catalog: https://y2.dev/cve/index.json. Follow nextCursor with the same search, filters, sort, and limit (1–100). A null cursor marks the end.

- WebMCP: search_cve_disclosures, get_cve_disclosure, get_cve_page_markdown, get_y2_cve_access. Available in compatible browsers.

- Cyber API: https://api.y2.dev/api/v2/cyber/cves and https://api.y2.dev/api/v2/cyber/cves/{cveId}.

- Y2 Pro or Elite: create a workspace API key with the intel:cyber scope and send Authorization: Bearer <Y2_API_KEY>. Setup: https://y2.dev/docs/api/create-key.

- x402: Pay per request without an account or API key. Omit Authorization, read the HTTP 402 PAYMENT-REQUIRED challenge, validate its current requirements, and retry with PAYMENT-SIGNATURE through an authorized payment client. These browser tools never make payments. Guide: https://y2.dev/docs/api/x402.

- OpenAPI: https://y2.dev/api/openapi.yaml. Agent access metadata: https://y2.dev/cve/agent.json.

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