Security readout for executives and security teams
Plain-English summary
This CVE describes a flaw in a NETGEAR WNDR3400v3 router service that could let an attacker run code on the device using a malicious UPnP SSDP packet. Routers are high-value because compromise can affect traffic, DNS, and internal access. The public bundle does not show active exploitation or a named patch.
Executive priority
Prioritize identifying and upgrading or replacing affected routers, especially in offices or networks where UPnP is enabled. Treat this as high risk because the reported impact is code execution on network edge equipment, but do not assume active exploitation from the supplied sources.
Technical view
The reported issue is a stack-based buffer overflow in the upnpd binary on NETGEAR WNDR3400v3 firmware 1.0.1.18_1.0.63. The attack vector is a crafted UPnP SSDP packet, with the stated impact of remote arbitrary code execution. CVSS, CWE, exploit status, and vendor remediation details are not provided in the bundle.
Likely exposure
Exposure appears limited to NETGEAR WNDR3400v3 routers running firmware 1.0.1.18_1.0.63 with UPnP/SSDP reachable. The sources do not confirm other affected models, versions, or whether WAN exposure is required.
Exploitation context
The bundle includes a public technical reference and states remote code execution via crafted SSDP traffic. It does not cite CISA KEV listing, active exploitation, public weaponized exploitation, or authentication requirements.
Researcher notes
Source detail is sparse. CVE metadata names WNDR3400v3, while the GitHub reference path mentions WNDR2400v3, so validate model and firmware carefully. No CVSS vector, CWE mapping, vendor advisory, or patch version is included in the provided bundle.
Mitigation direction
- Check NETGEAR support guidance for fixed firmware or retirement recommendations.
- Disable UPnP where business operations do not require it.
- Restrict UPnP/SSDP reachability to trusted internal networks only.
- Replace unsupported affected routers if no vendor fix exists.
- Monitor for unusual SSDP or UPnP traffic near affected devices.
Validation and detection
- Inventory NETGEAR WNDR3400v3 routers and record firmware versions.
- Confirm whether firmware 1.0.1.18_1.0.63 is present.
- Verify whether UPnP is enabled on affected routers.
- Check network controls limiting SSDP and UPnP reachability.
- Review vendor documentation for patched firmware availability.
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.
Execution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2019-14363 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/reevesrs24/CVE/blob/master/Netgear_WNDR2400v3/upnp_stack_overflow/upnp_stack_overflow.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.