Security readout for executives and security teams
Plain-English summary
NETGEAR ReadyNAS OS 6 before 6.8.0 has a stored cross-site scripting issue. In business terms, malicious content could be saved on the device and later run in another user’s browser, potentially affecting confidentiality, integrity, and availability at a limited level.
Executive priority
Treat as a moderate maintenance risk. Prioritize remediation for NAS devices holding sensitive data or reachable by many users, but this is not supported as an emergency active-exploitation case by the supplied sources.
Technical view
CVE-2017-18809 is a stored XSS flaw affecting NETGEAR ReadyNAS OS 6 versions prior to 6.8.0. The CVSS 3.0 vector is 5.2 medium, with local attack vector, high privileges required, user interaction required, changed scope, and low C/I/A impact.
Likely exposure
Exposure is likely limited to environments still operating NETGEAR ReadyNAS OS 6 devices below version 6.8.0. The provided record does not identify CPEs, endpoints, or deployment conditions.
Exploitation context
The source bundle does not show CISA KEV listing or other evidence of active exploitation. The CVSS vector indicates exploitation requires high privileges and user interaction, reducing likelihood compared with unauthenticated remote flaws.
Researcher notes
Evidence is sparse. The bundle names stored XSS and the fixed version boundary, but provides no CWE, endpoint, proof-of-concept details, or affected CPE list. Avoid assuming broader NETGEAR product impact.
Mitigation direction
- Upgrade affected ReadyNAS OS 6 devices to version 6.8.0 or later.
- Review NETGEAR advisory PSV-2017-0301 for vendor-specific guidance.
- Restrict administrative access to trusted users and management networks.
- Retire unsupported ReadyNAS devices that cannot receive fixed firmware.
Validation and detection
- Inventory ReadyNAS OS 6 devices and record firmware versions.
- Flag any ReadyNAS OS 6 firmware earlier than 6.8.0.
- Confirm whether the NETGEAR advisory applies to each model.
- Check logs for unusual administrative activity around affected 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-2017-18809 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
- 5.2 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AC:L/AV:L/A:L/C:L/I:L/PR:H/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:L/C:L/I:L/PR:H/S:C/UI:R1.13.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
5.2MediumVector: CVSS:3.0/AC:L/AV:L/A:L/C:L/I:L/PR:H/S:C/UI:R
Source materials
- CVE List V5 sourceCVE List V5
- https://kb.netgear.com/000049056/Security-Advisory-for-Stored-Cross-Site-Scripting-Vulnerability-on-Some-ReadyNAS-Devices-PSV-2017-0301CVE 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.