Security readout for executives and security teams
Plain-English summary
This CVE describes a denial-of-service flaw in TP-Link TL-WR886N 7.0 firmware 1.1.0. A remote attacker can crash the device by sending crafted DNS traffic to UDP port 53. The business impact is availability loss for networks relying on this router.
Executive priority
Prioritize if this router model supports business-critical connectivity or is reachable from untrusted networks. With no severity score or patch details in the sources, urgency depends on deployment exposure.
Technical view
The CVE states that crafted DNS packets sent to 53/udp can trigger a Tlb Load Exception on TP-Link TL-WR886N 7.0 1.1.0 devices, causing denial of service. The provided data has no CVSS score, CWE mapping, confirmed patch details, or complete CPE metadata.
Likely exposure
Exposure is most likely where TP-Link TL-WR886N 7.0 1.1.0 devices have UDP/53 reachable from untrusted networks, including WAN-facing DNS behavior or hostile local network segments.
Exploitation context
The CVE is not marked in KEV, and the provided sources do not show active exploitation. A public GitHub reference exists, but the bundle does not establish exploitation in the wild.
Researcher notes
The public record is sparse: affected metadata is incomplete, severity is unknown, and the core evidence is the CVE description plus a GitHub research reference. Validate exposure through inventory and network reachability, not assumptions.
Mitigation direction
- Check TP-Link guidance for affected firmware and available updates.
- Restrict UDP/53 access to trusted network segments only.
- Avoid exposing router DNS services to the internet.
- Replace or isolate affected devices if no fixed firmware exists.
- Monitor affected routers for unexplained crashes or reboots.
Validation and detection
- Inventory TP-Link TL-WR886N devices and firmware versions.
- Confirm whether firmware version 1.1.0 is present.
- Review firewall rules for UDP/53 reachability to the router.
- Check logs or uptime history for unexpected router resets.
- Document compensating controls for any still-exposed devices.
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-2018-19528 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://github.com/PAGalaxyLab/VulInfo/blob/master/TP-Link/WR886N/dns_request_buff_overflow/README.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.