Security readout for executives and security teams
Plain-English summary
This CVE describes stored cross-site scripting in NETGEAR ReadyNAS OS 6 before version 6.8.0. It could let a highly privileged local attacker place malicious content that affects another user who views it. The public bundle does not show active exploitation.
Executive priority
Treat this as moderate-priority hygiene for legacy NAS assets. Prioritize remediation where ReadyNAS stores sensitive business data, has many administrators, or exposes management access beyond a tightly controlled admin network.
Technical view
CVE-2017-18816 affects NETGEAR ReadyNAS OS 6 versions prior to 6.8.0. CVSS 3.0 is 5.2 with local attack vector, high privileges required, user interaction required, changed scope, and low confidentiality, integrity, and availability impact. CWE and model-specific CPE data are not provided.
Likely exposure
Exposure is most likely in environments still running legacy NETGEAR ReadyNAS OS 6 systems below 6.8.0. Risk is higher where multiple administrators use the web interface or where NAS management is reachable from broad internal networks.
Exploitation context
The source bundle does not indicate known exploitation, public exploit availability, or CISA KEV listing. The CVSS vector suggests exploitation requires local access, high privileges, and user interaction, which limits broad opportunistic abuse.
Researcher notes
The available data is sparse: no CWE, no CPEs, no affected model list, and no exploitation evidence are included. Analysis should stay tied to ReadyNAS OS 6 before 6.8.0 and the CVSS constraints unless the vendor advisory provides more detail.
Mitigation direction
- Upgrade ReadyNAS OS 6 devices to version 6.8.0 or later.
- Review NETGEAR advisory PSV-2017-0290 for exact vendor guidance.
- Restrict ReadyNAS management access to trusted administrative networks.
- Remove stale administrator accounts and enforce least privilege.
- Monitor vendor support status for legacy ReadyNAS devices.
Validation and detection
- Inventory NETGEAR ReadyNAS OS 6 devices in the environment.
- Confirm each device runs ReadyNAS OS 6.8.0 or later.
- Check whether the management interface is reachable beyond trusted admins.
- Review administrator accounts for unnecessary privileged access.
- Document unsupported or unpatchable devices for replacement planning.
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-2017-18816 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/000049049/Security-Advisory-for-Stored-Cross-Site-Scripting-Vulnerability-on-Some-ReadyNAS-devices-PSV-2017-0290CVE 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.