Security readout for executives and security teams
Plain-English summary
This is a stored cross-site scripting issue in several NETGEAR gateways, extenders, and routers. It is not rated as a broad remote-takeover flaw, but vulnerable firmware could let a high-privileged local/adjacent attacker affect users who interact with the device. Treat it as a moderate hygiene and network-edge firmware issue.
Executive priority
Moderate priority. Patch or replace affected devices during the next network maintenance cycle, sooner for shared, guest-accessible, or administrator-heavy networks. There is no cited active exploitation in the provided sources.
Technical view
CVE-2019-20749 affects specified NETGEAR D7800, EX6100v2, EX6150v2, R7500v2, R7800, R8900, R9000, WN2000RPTv3, WN3000RPv3, and WN3100RPv2 firmware before vendor-listed versions. CVSS 3.0 is 4.8: adjacent-network vector, low complexity, high privileges required, changed scope, low confidentiality and integrity impact.
Likely exposure
Exposure is likely limited to organizations still using the listed NETGEAR models on firmware older than the fixed versions. Risk is higher where device management is reachable from local or Wi-Fi networks used by many people.
Exploitation context
The source bundle does not show CISA KEV listing or any cited active exploitation. The CVSS vector requires adjacent network access and high privileges, which lowers mass-exploitation likelihood, but stored XSS can persist inside a vulnerable device interface.
Researcher notes
Evidence is limited to the CVE record, CVE List data, and NETGEAR advisory reference. The bundle does not include CWE details, proof-of-concept status, affected parameters, or exploit prerequisites beyond the CVSS vector and vendor firmware thresholds.
Mitigation direction
- Inventory the listed NETGEAR models and record firmware versions.
- Upgrade affected devices to the vendor-listed fixed versions or later.
- Check NETGEAR advisory PSV-2018-0172 for model-specific guidance.
- Restrict device management access to trusted administrators and trusted networks.
- Replace unsupported devices if fixed firmware is unavailable.
Validation and detection
- Confirm whether any listed model exists in the environment.
- Compare firmware against the affected-before versions in the advisory.
- Verify upgraded devices report the expected fixed firmware or later.
- Review exposure of device management interfaces on local and Wi-Fi networks.
- Document exceptions where devices cannot be updated or replaced.
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-2019-20749 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
- Medium
- CVSS
- 4.8 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AC:L/AV:A/A:N/C:L/I:L/PR:H/S:C/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:N/C:L/I:L/PR:H/S:C/UI:N1.72.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
4.8MediumVector: CVSS:3.0/AC:L/AV:A/A:N/C:L/I:L/PR:H/S:C/UI:N
Source materials
- CVE List V5 sourceCVE List V5
- https://kb.netgear.com/000060965/Security-Advisory-for-Stored-Cross-Site-Scripting-on-Some-Gateways-Extenders-and-Routers-PSV-2018-0172CVE 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.