Security readout for executives and security teams
Plain-English summary
This CVE describes a cross-site scripting issue in old D-Link DIR-816L and DIR-803 router firmware. The public record says these products are no longer supported and that exploitation is typically impractical. The main business concern is unsupported network equipment, not a clearly active campaign.
Executive priority
Treat this as a low-urgency vulnerability but a useful signal to remove unsupported routers from production. Prioritize replacement where devices sit at network edges or expose administrative access.
Technical view
webinc/js/info.php on D-Link DIR-816L 2.06.B09_BETA and DIR-803 1.04.B02 can reflect content from the HTTP Referer header. The CVE notes practical limits: URL encoding generally blocks exploitation except in Internet Explorer, and normal web pages cannot force arbitrary Referer headers for additional requests.
Likely exposure
Exposure is limited to organizations still running the named D-Link router models and firmware. Risk increases if administrative interfaces are reachable from untrusted networks or if legacy browsers are used for administration.
Exploitation context
The source bundle does not show KEV listing, CVSS scoring, active exploitation, or a public vendor patch. The CVE itself says this is typically not exploitable because of browser and Referer-header constraints.
Researcher notes
Evidence is narrow and includes explicit exploitability caveats. Do not assume broader D-Link impact beyond the named models and versions. No CVSS, CWE, patch status, or active exploitation evidence is provided in the bundle.
Mitigation direction
- Inventory for DIR-816L 2.06.B09_BETA and DIR-803 1.04.B02 devices.
- Replace or retire unsupported D-Link devices where feasible.
- Disable remote administration if enabled.
- Restrict management access to trusted admin networks or VPN only.
- Check D-Link SAP10190 for any model-specific vendor guidance.
Validation and detection
- Confirm router model and firmware version from asset records or admin inventory.
- Verify management interfaces are not exposed to the public internet.
- Check whether unsupported devices remain in production networks.
- Review browser standards for administrators; avoid Internet Explorer for device management.
- Document compensating controls if replacement cannot happen immediately.
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-2020-25786 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://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10190CVE reference · x_refsource_MISC
- https://github.com/sek1th/iot/blob/master/DIR-816L_XSS.mdCVE 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.