LiveActive security incident?Get immediate response
CVE Record

CVE-2018-17017: An issue was discovered on TP-Link TL-WR886N 6.0 2.3.4 and TL-WR886N 7.0 1.1.0 devices.

An issue was discovered on TP-Link TL-WR886N 6.0 2.3.4 and TL-WR886N 7.0 1.1.0 devices. Authenticated attackers can crash router services (e.g., inetd, HTTP, DNS, and UPnP) via long JSON data for dhcpd udhcpd enable.

UnknownCVSS not scoredNot KEV-listedUpdated
Discuss exposureBack to CVEs
Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2018-17017 is a denial-of-service issue in specific TP-Link TL-WR886N router versions. An authenticated attacker can send oversized JSON data to crash key router services, potentially disrupting web management, DNS, UPnP, and related network functions. Sources do not provide CVSS scoring or a named vendor fix.

Executive priority

Treat this as a targeted availability risk for affected legacy routers. Prioritize confirmation and replacement or isolation if these devices support business-critical connectivity. Urgency is lower than unauthenticated remote code execution because authentication is required and active exploitation is not cited.

Technical view

The CVE describes authenticated service crashes on TP-Link TL-WR886N 6.0 firmware 2.3.4 and TL-WR886N 7.0 firmware 1.1.0. The trigger involves long JSON data associated with dhcpd udhcpd enable handling. Reported impacted services include inetd, HTTP, DNS, and UPnP.

Likely exposure

Exposure appears limited to environments still operating the listed TP-Link TL-WR886N hardware and firmware versions. The source bundle does not establish other affected products, newer firmware exposure, or internet-wide prevalence.

Exploitation context

The vulnerability requires authenticated access. The source bundle and KEV status do not indicate active exploitation. Impact is availability-focused: crashing router services can disrupt local network management and name-resolution functions until recovery.

Researcher notes

Evidence is sparse: the CVE record names affected versions and crashable services but provides no CVSS vector, CWE, patch version, or exploitation-in-the-wild confirmation. Do not generalize impact beyond the named TL-WR886N versions without additional vendor or lab evidence.

Mitigation direction

  • Check TP-Link guidance and firmware availability for the listed TL-WR886N versions.
  • Restrict router administration to trusted management networks and administrators only.
  • Disable remote administration if it is enabled and not required.
  • Replace affected devices if no supported firmware or vendor guidance is available.
  • Monitor for repeated service crashes or unexpected router management outages.

Validation and detection

  • Inventory TP-Link TL-WR886N devices and record hardware and firmware versions.
  • Confirm whether any listed firmware versions are present in production.
  • Verify administrative interfaces are not exposed to untrusted networks.
  • Review router logs or uptime history for repeated service crashes.
  • Document compensating controls where firmware status cannot be confirmed.
Prepared
Confidence
medium
Sources
3

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.

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 · low confidence lookup

CVE-2018-17017 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

Open ATT&CK lookup
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
2Source 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.