Security readout for executives and security teams
Plain-English summary
CVE-2020-27600 is a command-execution flaw reported in D-Link DIR-846 A1_100.26 routers. A remote attacker may be able to make the router run unintended operating-system commands through wireless settings parameters. For executives, the concern is loss of control over an edge network device, especially if management functions are reachable from untrusted networks.
Executive priority
Prioritize this for any internet-exposed or business-critical D-Link DIR-846 device. The business risk is router compromise, traffic interception, or network foothold. Urgency is lower where no affected model exists or management access is isolated.
Technical view
The issue is in HNAP1/control/SetMasterWLanSettings.php. The CVE description says shell metacharacters in the ssid0 or ssid1 parameter can lead to arbitrary command execution. The source bundle does not provide CVSS, CWE, authentication requirements, patch version, or a confirmed exploit-in-the-wild signal.
Likely exposure
Likely exposure is limited to environments using D-Link DIR-846 A1 firmware A1_100.26, especially where router management or HNAP functionality is reachable remotely. The CVE record’s structured affected fields are incomplete, so confirm device model and firmware from asset inventory.
Exploitation context
The CVE source describes remote arbitrary command execution. CISA KEV is false in the supplied bundle, and no cited source confirms active exploitation. Public GitHub research is referenced, but this analysis does not rely on or reproduce exploit mechanics.
Researcher notes
The strongest evidence is the CVE description and referenced public research. Key gaps are authentication context, affected-version range, fixed version, CVSS score, and vendor-specific remediation. Treat product scope narrowly unless D-Link guidance confirms broader impact.
Mitigation direction
- Check D-Link security bulletin and support pages for DIR-846 A1 firmware guidance.
- Inventory D-Link DIR-846 A1 devices and confirm firmware versions.
- Remove remote exposure of router administration interfaces where possible.
- Restrict management access to trusted administrative networks.
- Replace or retire affected devices if vendor support is unavailable.
Validation and detection
- Confirm whether any deployed router is D-Link DIR-846 A1_100.26.
- Review firewall rules for exposed router management or HNAP endpoints.
- Check vendor advisories for a fixed firmware or end-of-support status.
- Review logs for unexpected configuration changes or administrative access.
- Document compensating controls for any device that cannot be updated.
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-2020-27600 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://www.dlink.com/en/security-bulletin/CVE reference · x_refsource_MISC
- https://www.dlink.com/CVE reference · x_refsource_MISC
- https://github.com/pwnninja/dlink/blob/main/DIR-846_SetMasterWLanSettingsCI.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.