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CVE Record

CVE-2019-19598: D-Link DAP-1860 devices before v1.04b03 Beta allow access to administrator functions without authentication...

D-Link DAP-1860 devices before v1.04b03 Beta allow access to administrator functions without authentication via the HNAP_AUTH header timestamp value. In HTTP requests, part of the HNAP_AUTH header is the timestamp used to determine the time when the user sent the request. If this value is equal to the value stored in the device's /var/hnap/timestamp file, the request will pass the HNAP_AUTH check function.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

CVE-2019-19598 is an authentication bypass in D-Link DAP-1860 devices running firmware before v1.04b03 Beta. A crafted management request can be accepted as administrator if the HNAP_AUTH timestamp matches the device-stored timestamp. For businesses, the concern is unauthorized control of a network extender, not endpoint compromise by itself.

Executive priority

Treat this as a high-priority network-device remediation if DAP-1860 devices are present. The business risk is unauthorized administration of infrastructure that may affect wireless access, traffic handling, or persistence. Urgency is lower if management interfaces are isolated and firmware is current.

Technical view

The issue affects D-Link DAP-1860 HNAP authentication logic. The CVE description says the HNAP_AUTH header timestamp is compared with /var/hnap/timestamp, and equality can pass the authentication check. The bundle does not provide CVSS, CWE, CPE, or broad affected-version metadata beyond firmware before v1.04b03 Beta.

Likely exposure

Exposure is most likely where D-Link DAP-1860 administration or HNAP management is reachable from untrusted networks. The source bundle does not prove internet-scale exposure, affected CPEs, or whether other D-Link models are affected.

Exploitation context

The CVE is not listed as KEV in the provided bundle, and no cited source states active exploitation. Public research is referenced, so defenders should assume the vulnerability details are known, while avoiding claims of weaponized exploitation.

Researcher notes

Evidence is limited to the CVE description, D-Link advisory reference, and public researcher write-up. The core defect is an HNAP_AUTH timestamp equality bypass. Do not generalize impact to other models without vendor or researcher evidence.

Mitigation direction

  • Review D-Link advisory SAP10135 for the affected device and firmware guidance.
  • Upgrade D-Link DAP-1860 devices before v1.04b03 Beta per vendor guidance.
  • Restrict management access to trusted admin networks or VPN only.
  • Block internet access to device administration and HNAP management surfaces.
  • Replace devices if vendor-supported firmware is unavailable.

Validation and detection

  • Inventory D-Link DAP-1860 devices and record firmware versions.
  • Confirm whether any device runs firmware before v1.04b03 Beta.
  • Check firewall rules for exposed administration or HNAP access.
  • Review device logs and configuration history for unexpected administrator changes.
  • Validate remediation against the D-Link advisory, not assumptions.
Prepared
Confidence
medium
Sources
4

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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.

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

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.

0CVSS vectors
0Timeline events
0ADP providers
3Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.