Security readout for executives and security teams
Plain-English summary
CVE-2017-18783 is a cross-site scripting issue in multiple NETGEAR router models. Affected firmware could allow script execution in a user’s browser if interaction occurs. Business risk is moderate because impact is limited to low confidentiality and integrity effects, with no availability impact stated.
Executive priority
Treat this as a routine but necessary router hygiene issue. It is not supported by active-exploitation evidence in the supplied sources, but old router firmware can remain exposed for years and should be remediated during the next network maintenance cycle.
Technical view
The CVE describes XSS across listed NETGEAR D, JNR, JR, JWNR, PR, R, WNDR, and WNR router firmware versions before specified fixed releases. CVSS 3.0 is 5.0 with low complexity, no privileges, required user interaction, changed scope, and low confidentiality/integrity impact.
Likely exposure
Exposure is limited to organizations or individuals still running the named NETGEAR router models below the listed firmware versions. Risk is most relevant where users can access the router management interface or related web UI from untrusted or shared local environments.
Exploitation context
The supplied sources do not show active exploitation, and the CVE is not marked KEV. The vulnerability requires user interaction and is scored with local attack vector, so it should be prioritized through firmware inventory rather than treated as an internet-wide emergency.
Researcher notes
The affected field in the bundle is generic, but the description enumerates specific NETGEAR models and firmware thresholds. No CWE is supplied. Avoid assuming exploitability beyond XSS, user interaction, and the CVSS vector unless NETGEAR or another cited source provides more detail.
Mitigation direction
- Inventory NETGEAR routers for the exact affected models listed in the CVE description.
- Upgrade affected devices to the listed fixed firmware versions or later per NETGEAR guidance.
- Check NETGEAR’s advisory for model-specific update availability and instructions.
- Restrict router management access to trusted administrators and trusted networks.
- Replace devices that cannot receive vendor-supported fixed firmware.
Validation and detection
- Confirm each router model and current firmware version from administrative records or device UI.
- Compare firmware versions against the fixed version thresholds in the CVE description.
- Verify update completion after maintenance by rechecking the reported firmware version.
- Review whether router management interfaces are reachable by untrusted local users.
- Document unsupported or unknown-version devices for replacement or compensating controls.
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-2017-18783 mapping review
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Open ATT&CK lookup- Severity
- Medium
- CVSS
- 5 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AC:L/AV:L/A:N/C:L/I:L/PR:N/S:C/UI:R
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:L/A:N/C:L/I:L/PR:N/S:C/UI:R1.82.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
5MediumVector: CVSS:3.0/AC:L/AV:L/A:N/C:L/I:L/PR:N/S:C/UI:R
Source materials
- CVE List V5 sourceCVE List V5
- https://kb.netgear.com/000049536/Security-Advisory-for-Cross-Site-Scripting-on-Some-Routers-PSV-2017-2952CVE 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.