Security readout for executives and security teams
Plain-English summary
Some D-Link DIR-850L routers shipped with the same HTTPS private key across many customer installations. If an attacker obtains that key from one device, the HTTPS protection on other affected devices can be undermined. This weakens trust in encrypted router communications, especially for devices still in service.
Executive priority
Treat this as a high-priority legacy network device risk. The issue breaks a core security assumption for encrypted router access, but urgency depends on whether affected devices remain deployed and reachable.
Technical view
CVE-2017-14422 affects D-Link DIR-850L Rev. A through FW114WWb07_h2ab_beta1 and Rev. B through FW208WWb02. The devices reuse a hardcoded /etc/stunnel.key private key across installations, allowing remote attackers with knowledge of that key to defeat HTTPS cryptographic protections. No CVSS or CWE is provided in the source bundle.
Likely exposure
Organizations are exposed if they still operate affected D-Link DIR-850L Rev. A or Rev. B routers, especially where HTTPS management or related router services are reachable over untrusted networks.
Exploitation context
The source states remote attackers can defeat HTTPS protections by using the shared private key from another installation. The bundle does not show CISA KEV listing, confirmed active exploitation, or public exploitation telemetry.
Researcher notes
The provided evidence is narrow: it identifies shared private key reuse and affected firmware ranges, but does not provide CVSS, patch details, exploit telemetry, or KEV confirmation. Avoid assuming broader D-Link impact beyond DIR-850L Rev. A and Rev. B.
Mitigation direction
- Identify any D-Link DIR-850L Rev. A or Rev. B devices in use.
- Check installed firmware against the affected versions named in the CVE.
- Review D-Link guidance for fixed firmware, retirement, or replacement direction.
- Restrict router management exposure to trusted administrative networks only.
- Replace unsupported affected devices if no vendor-supported remediation exists.
Validation and detection
- Inventory router model, hardware revision, and firmware version from trusted asset records.
- Confirm whether HTTPS management or related services are reachable from untrusted networks.
- Verify whether any affected devices use the shared stunnel private key.
- Document compensating controls for devices awaiting replacement or vendor guidance.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CVE-2017-14422 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://pierrekim.github.io/blog/2017-09-08-dlink-850l-mydlink-cloud-0days-vulnerabilities.htmlCVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.