PatchSiren cyber security CVE debrief
CVE-2017-20235 ProSoft Technology CVE debrief
CVE-2017-20235 is a critical authentication bypass vulnerability in ProSoft Technology ICX35-HWC cellular gateways, which allows unauthenticated attackers to gain access to administrative functions without valid credentials. This vulnerability exists in the web user interface of ProSoft Technology ICX35-HWC version 1.3 and prior cellular gateways. The vulnerability has a CVSS score of 9.3 and is considered CRITICAL. Organizations using ProSoft Technology ICX35-HWC cellular gateways should prioritize patching this vulnerability to prevent unauthorized access.
- Vendor
- ProSoft Technology
- Product
- ICX35-HWC Cellular Gateway
- CVSS
- CRITICAL 9.3
- CISA KEV
- Not listed in stored evidence
- Original CVE published
- 2026-04-03
- Original CVE updated
- 2026-07-21
- Advisory published
- 2026-04-03
- Advisory updated
- 2026-07-21
Who should care
Organizations using ProSoft Technology ICX35-HWC cellular gateways should prioritize patching this vulnerability to prevent unauthorized access. Security teams and vulnerability management teams should review the official CVE record and vendor advisory to understand the affected scope and severity. Platform operators and administrators should also be aware of this vulnerability and take necessary actions to mitigate the risk.
Technical summary
The vulnerability exists in the web user interface of ProSoft Technology ICX35-HWC version 1.3 and prior cellular gateways. Attackers can bypass the authentication mechanism in affected firmware versions to obtain full administrative access to device configuration and settings. This could lead to significant security risks if not addressed. The CVE record and NVD entry provide further details on this vulnerability.
Defensive priority
High priority should be given to patching this vulnerability due to its critical severity and potential impact on device security.
Recommended defensive actions
- Apply patches or updates provided by the vendor to fix the authentication bypass vulnerability.
- Implement compensating controls, such as restricting access to the web user interface.
- Monitor for suspicious activity and implement exception tracking.
- Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance.
- Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.
- Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed.
- Track exceptions, retest remediated assets, and close the item only after evidence is documented.
Evidence notes
The CVE record was published on 2026-04-03T23:17:00.267Z and was last modified on 2026-07-21T07:10:00.117Z. The NVD entry is currently Analyzed. The source item URL for CVE-2017-20235 is available. However, due to limited source detail, we cannot confirm the full scope of affected products or versions. Defenders should verify the official CVE record and vendor advisory for accurate information. The CVE-2017-20235 record indicates a critical authentication bypass vulnerability in ProSoft Technology ICX35-HWC cellular gateways.
Sources and references
Verified primary and authoritative sources
-
CVE-2017-20235 CVE Program record
Publisher, destination, and source semantics verified
URL: https://www.cve.org/CVERecord?id=CVE-2017-20235
CVE Program - Official CVE Program record with source-provided CVE metadata.
-
CVE-2017-20235 NVD vulnerability detail
Publisher, destination, and source semantics verified
URL: https://nvd.nist.gov/vuln/detail/CVE-2017-20235
NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.
Supplemental references
-
Mitigation or vendor reference
Unverified legacy reference
URL: https://assets.belden.com/m/1281cac2c9e90abf/original/Security-Bulletin-Authentication-Security-ProSoft-ICX35-BSECV-2017-09.pdf
[email protected] - Vendor Advisory
-
Mitigation or vendor reference
Unverified legacy reference
URL: https://www.vulncheck.com/advisories/prosoft-technology-icx35-hwc-authentication-bypass
[email protected] - Third Party Advisory
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.