Security readout for executives and security teams
Plain-English summary
This flaw lets someone with access to an affected NETGEAR R7800 or XR500 router inject operating-system commands. If abused, it could allow router takeover, traffic interference, or service disruption. The public sources name fixed firmware thresholds for both models.
Executive priority
Prioritize remediation for any affected routers still in service, especially those managing sensitive networks or reachable by non-administrators. This is high severity, but supplied sources do not prove active exploitation.
Technical view
CVE-2019-20706 is a command injection issue in certain NETGEAR devices: R7800 before 1.0.2.60 and XR500 before 2.3.2.32. The CVSS score is 8.8. The description calls it post-authentication, while the bundled vector lists PR:N; validate exposure against vendor advisory details.
Likely exposure
Exposure is limited to NETGEAR R7800 and XR500 devices running older firmware than the named fixed versions. Risk is highest where router administration is reachable by untrusted users or adjacent networks.
Exploitation context
The bundle does not show CISA KEV listing or cited active exploitation. Sources describe command injection impact, but do not provide public evidence of exploitation in the supplied material.
Researcher notes
The source bundle has a notable mismatch: text says authenticated command injection, while CVSS lists PR:N. Treat exploit preconditions carefully and rely on vendor advisory confirmation during validation.
Mitigation direction
- Upgrade R7800 firmware to 1.0.2.60 or later.
- Upgrade XR500 firmware to 2.3.2.32 or later.
- Restrict router administration access to trusted management networks.
- Review NETGEAR advisory for model-specific update guidance.
Validation and detection
- Inventory NETGEAR R7800 and XR500 devices.
- Check installed firmware versions against fixed thresholds.
- Confirm administrative interfaces are not exposed to untrusted networks.
- Document any devices requiring vendor guidance or replacement.
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
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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-2019-20706 mapping review
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Open ATT&CK lookup- Severity
- High
- CVSS
- 8.8 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AC:L/AV:A/A:H/C:H/I:H/PR:N/S:U/UI:N
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 vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.0/AC:L/AV:A/A:H/C:H/I:H/PR:N/S:U/UI:N2.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
8.8HighVector: CVSS:3.0/AC:L/AV:A/A:H/C:H/I:H/PR:N/S:U/UI:N
Source materials
- CVE List V5 sourceCVE List V5
- https://kb.netgear.com/000061223/Security-Advisory-for-Post-Authentication-Command-Injection-on-R7800-and-XR500-PSV-2018-0354CVE reference · x_refsource_CONFIRM
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.