# CVE-2016-10177: D-Link DWR-932B hard-coded credentials in TELNET and SSH

Source: https://junglewise.ai/threats/cve-2016-10177-d-link-dwr-932b-hard-coded-credentials-in-telnet-and-ssh  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2017-01-30. Updated: 2026-05-13  
License: CC BY 4.0 with a link back

CVE-2016-10177 · Severity: critical · CVSS 9.8 · Published 2017-01-30

The D-Link DWR-932B LTE router contains undocumented administrative accounts with simple, hard-coded passwords. An attacker can use these credentials to remotely log into the device, granting them full control over the network traffic and device settings. This could lead to the interception of sensitive data, unauthorized network access, or complete disruption of internet services for the user.

Technologies: [Dlink Dwr-932b](https://junglewise.ai/threats/technologies/dwr-932b), [Dlink Dwr-932b Firmware](https://junglewise.ai/threats/technologies/dwr-932b-firmware). Vendors: [Dlink](https://junglewise.ai/threats/vendors/dlink).

## Quick answers

**Is CVE-2016-10177 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2016-10177 being exploited in the wild.

**How severe is CVE-2016-10177?** Critical severity, with a CVSS score of 9.8, published 30 January 2017.

**Which products and versions are affected?** D-Link DWR-932B Firmware revB 2.02.EU and prior.

**Is there a fix for CVE-2016-10177?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2016-10177 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2016-10177?** Check whether you run Dlink Dwr-932b or Dlink Dwr-932b Firmware. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The D-Link DWR-932B router (specifically Revision B) contains multiple hard-coded credential sets for undocumented TELNET and SSH services. The 'admin' account uses the password 'admin', and the 'root' account uses the password '1234'. These services are enabled by default in the firmware and are accessible over the network. An attacker can exploit this by connecting to the device via SSH or Telnet to gain a root-level shell. Additionally, the device contains a 'magic string' backdoor where sending 'HELODBG' via UDP to port 39889 triggers an unauthenticated root telnet session. No patch is currently available as the vendor has not addressed these legacy vulnerabilities.

## Affected products

- D-Link DWR-932B Firmware revB 2.02.EU and prior

## Timeline

- 2016-09-28: disclosed: Initial discovery and write-up by security researcher Pierre Kim
- 2017-01-30: advisory: CVE published in the National Vulnerability Database (NVD)

## References

- [http://www.securityfocus.com/bid/95877](http://www.securityfocus.com/bid/95877)
- [https://pierrekim.github.io/blog/2016-09-28-dlink-dwr-932b-lte-routers-vulnerabilities.html](https://pierrekim.github.io/blog/2016-09-28-dlink-dwr-932b-lte-routers-vulnerabilities.html)

## Related threats

- [D-Link DWR-932B missing deny rules in UPnP configuration](https://junglewise.ai/threats/cve-2016-10186-d-link-dwr-932b-missing-deny-rules-in-upnp-configuration)
- [D-Link DWR-932B disabled UPnP security mode](https://junglewise.ai/threats/cve-2016-10185-d-link-dwr-932b-disabled-upnp-security-mode)
- [D-Link DWR-932B path traversal in qmiweb](https://junglewise.ai/threats/cve-2016-10184-d-link-dwr-932b-path-traversal-in-qmiweb)
- [D-Link DWR-932B directory traversal in qmiweb](https://junglewise.ai/threats/cve-2016-10183-d-link-dwr-932b-directory-traversal-in-qmiweb)
- [D-Link DWR-932B command injection in qmiweb](https://junglewise.ai/threats/cve-2016-10182-d-link-dwr-932b-command-injection-in-qmiweb)