Security readout for executives and security teams
Plain-English summary
CVE-2019-19996 is a denial-of-service issue in Intelbras IWR 3000N firmware 1.8.7. A malformed login request can force the device to reboot, interrupting network availability. The sources do not provide CVSS, CWE, active exploitation, or vendor fix details.
Executive priority
Treat this as an availability risk for any affected routers supporting business connectivity. Prioritize internet-exposed or shared-network devices first, then confirm whether vendor-supported firmware or replacement is available.
Technical view
The CVE describes JSON misparsing in the device login handling path, specifically involving malformed input sent to v1/system/login. The reported impact is remote denial of service through device reboot. The source bundle only names Intelbras IWR 3000N version 1.8.7 as affected.
Likely exposure
Exposure is most likely where Intelbras IWR 3000N 1.8.7 devices have reachable web/login management surfaces. Internet exposure would raise urgency; internal-only devices can still affect branch, small office, or managed network availability if reachable by untrusted users.
Exploitation context
The bundle marks KEV as false and provides no cited evidence of active exploitation. A public writeup is referenced, so the issue is publicly known. The documented outcome is reboot-based denial of service, not code execution or data theft.
Researcher notes
Evidence is limited: no CVSS vector, CWE, patch statement, or broad affected-version range is supplied. Do not generalize beyond Intelbras IWR 3000N 1.8.7 without additional vendor evidence. Validation should focus on inventory, reachability, and defensive controls.
Mitigation direction
- Identify Intelbras IWR 3000N devices and confirm firmware version 1.8.7.
- Restrict management/login access to trusted administrative networks only.
- Check Intelbras guidance for firmware updates or official mitigations.
- Monitor for unexplained device reboots and repeated malformed login activity.
- Segment or replace devices if no supported remediation is available.
Validation and detection
- Inventory network edge devices for Intelbras IWR 3000N model identifiers.
- Confirm firmware version from administrative records or device management UI.
- Review logs and uptime history for unexpected reboots around login activity.
- Verify management interfaces are not exposed to the public internet.
- Avoid disruptive proof-of-concept testing on production 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-2019-19996 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://medium.com/%40rsantos_14778/dos-cve-2019-19996-5ad1be772179CVE 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.