Security readout for executives and security teams
Plain-English summary
CVE-2018-17989 is a stored cross-site scripting issue in the D-Link DSL-3782 web interface, firmware 1.01. An authenticated attacker can save malicious HTML or JavaScript in the ACL page, causing it to run when a user later opens that page. The sources do not provide CVSS, vendor fix details, or evidence of active exploitation.
Executive priority
Treat this as a targeted administrative-interface risk, not a confirmed internet-scale emergency. Prioritize identifying affected routers, limiting management access, and confirming whether vendor-supported firmware or replacement is available.
Technical view
The vulnerability affects the ACL page in the device web UI. The CVE states that injected JavaScript or HTML executes when /cgi-bin/New_GUI/Acl.asp is requested. Successful use requires authenticated access to the interface. Product naming should be verified because the CVE says DSL-3782 while the linked advisory URL references DIR-3782.
Likely exposure
Exposure is likely limited to D-Link DSL-3782 firmware 1.01 devices where authenticated users can reach the management web interface. Risk increases if router administration is shared broadly, accessible from untrusted networks, or used from privileged administrator browsers.
Exploitation context
No source in the bundle states active exploitation, KEV listing, public weaponization, or unauthenticated exploitability. The known prerequisite is authenticated web-interface access. Impact would center on browser-side execution in a user session that views the affected ACL page.
Researcher notes
Evidence is sparse: no CVSS vector, CWE mapping, exploit status, or official patch information is included. The authenticated stored XSS behavior and affected firmware come from the CVE description and linked advisory. Verify product naming before asset matching.
Mitigation direction
- Check D-Link guidance for firmware updates or official mitigation advice.
- Restrict router management access to trusted administrators and trusted networks.
- Disable remote administration if not explicitly required.
- Replace or retire devices that cannot be updated safely.
- Avoid using privileged browsing sessions for routine router administration.
Validation and detection
- Inventory D-Link DSL-3782 devices and confirm firmware version 1.01 exposure.
- Confirm whether /cgi-bin/New_GUI/Acl.asp is reachable only by trusted administrators.
- Review router administration accounts for unnecessary or shared access.
- Check vendor advisories for corrected firmware or lifecycle status.
- Look for stored unexpected HTML or script content in ACL configuration fields.
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-2018-17989 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://c0mix.github.io/2019/D-Link-DIR-3782-SecAdvisory-OS-Command-Injection-and-Stored-XSS/CVE 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.