Certain NETGEAR devices are affected by a buffer overflow by an unauthenticated attacker.
Priority LOW 39CWE-120Published · Updated
Key facts
- Attack vector
- Adjacent network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-120 and the CVSS impact.
Summary
Certain NETGEAR devices are affected by a buffer overflow by an unauthenticated attacker. This affects D3600 before 1.0.0.67, D6000 before 1.0.0.67, and R9000 before 1.0.2.52.
Why it matters now
EPSS 0.00754 55th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 6
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:netgear:r9000_firmware:*:*:*:*:*:*:*:* | before 1.0.2.52 | Vulnerable | NETGEAR |
| cpe:2.3:h:netgear:r9000:-:*:*:*:*:*:*:* | not specified by NVD | Running on | NETGEAR |
| cpe:2.3:o:netgear:d6000_firmware:*:*:*:*:*:*:*:* | before 1.0.0.67 | Vulnerable | NETGEAR |
| cpe:2.3:h:netgear:d6000:-:*:*:*:*:*:*:* | not specified by NVD | Running on | NETGEAR |
| cpe:2.3:o:netgear:d3600_firmware:*:*:*:*:*:*:*:* | before 1.0.0.67 | Vulnerable | NETGEAR |
| cpe:2.3:h:netgear:d3600:-:*:*:*:*:*:*:* | not specified by NVD | Running on | NETGEAR |
- cpe:2.3:o:netgear:r9000_firmware:*:*:*:*:*:*:*:* Versions before 1.0.2.52 Vulnerable ·NETGEAR
- cpe:2.3:h:netgear:r9000:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NETGEAR
- cpe:2.3:o:netgear:d6000_firmware:*:*:*:*:*:*:*:* Versions before 1.0.0.67 Vulnerable ·NETGEAR
- cpe:2.3:h:netgear:d6000:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NETGEAR
- cpe:2.3:o:netgear:d3600_firmware:*:*:*:*:*:*:*:* Versions before 1.0.0.67 Vulnerable ·NETGEAR
- cpe:2.3:h:netgear:d3600:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NETGEAR
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2018-21221
- 2026-10-03 Alias added: GHSA-9fgp-r4v4-wwg9
References
More NETGEAR D3600 Firmware vulnerabilities
- TI-2018-15099 Certain NETGEAR devices are affected by a hardcoded password. CVSS 3.1CRITICAL 9.8
- TI-2020-18243 Certain NETGEAR devices are affected by a stack-based buffer overflow by an… CVSS 3.1CRITICAL 9.8
- TI-2019-14950 Certain NETGEAR devices are affected by SQL injection. CVSS 3.1CRITICAL 9.8
- TI-2017-13914 Certain NETGEAR devices are affected by command injection by an unauthenticated attacker. CVSS 3.1HIGH 8.8
- TI-2021-20728 Certain NETGEAR devices are affected by incorrect configuration of security settings. CVSS 3.1HIGH 8.8
- TI-2019-14905 Certain NETGEAR devices are affected by a stack-based buffer overflow by an… CVSS 3.1HIGH 8.8
Sources
- CVE-2018-21221 · CVE Program
- CVE-2018-21221 · NVD
- FIRST EPSS
- GHSA-9fgp-r4v4-wwg9 · GitHub Advisory Database · CC BY 4.0
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