Certain NETGEAR devices are affected by unauthenticated firmware downgrade.
Priority MEDIUM 42Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
Summary
Certain NETGEAR devices are affected by unauthenticated firmware downgrade. This affects WAC505 before 5.0.0.17 and WAC510 before 5.0.0.17.
Why it matters now
EPSS 0.01311 70th 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 · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:netgear:wac505_firmware:*:*:*:*:*:*:*:* | before 5.0.0.17 | Vulnerable | NETGEAR |
| cpe:2.3:h:netgear:wac505:-:*:*:*:*:*:*:* | not specified by NVD | Running on | NETGEAR |
| cpe:2.3:o:netgear:wac510_firmware:*:*:*:*:*:*:*:* | before 5.0.0.17 | Vulnerable | NETGEAR |
| cpe:2.3:h:netgear:wac510:-:*:*:*:*:*:*:* | not specified by NVD | Running on | NETGEAR |
- cpe:2.3:o:netgear:wac505_firmware:*:*:*:*:*:*:*:* Versions before 5.0.0.17 Vulnerable ·NETGEAR
- cpe:2.3:h:netgear:wac505:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NETGEAR
- cpe:2.3:o:netgear:wac510_firmware:*:*:*:*:*:*:*:* Versions before 5.0.0.17 Vulnerable ·NETGEAR
- cpe:2.3:h:netgear:wac510:-:*:*:*:*:*:*:* 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-2018-21131
- 2026-10-03 Alias added: GHSA-jc5f-m375-x98q
References
More NETGEAR Wac505 Firmware vulnerabilities
- TI-2018-15095 Certain NETGEAR devices are affected by a stack-based buffer overflow by an… CVSS 3.1CRITICAL 9.8
- TI-2018-15094 Certain NETGEAR devices are affected by authentication bypass. CVSS 3.1CRITICAL 9.8
- TI-2018-15059 Certain NETGEAR devices are affected by a stack-based buffer overflow by an… CVSS 3.1CRITICAL 9.8
- TI-2018-15092 Certain NETGEAR devices are affected by command injection by an unauthenticated attacker. CVSS 3.1HIGH 8.8
- TI-2018-15089 Certain NETGEAR devices are affected by command injection by an unauthenticated attacker. CVSS 3.1HIGH 8.8
- TI-2018-15088 Certain NETGEAR devices are affected by command injection by an unauthenticated attacker. CVSS 3.1HIGH 8.8
Sources
- CVE-2018-21131 · CVE Program
- CVE-2018-21131 · NVD
- FIRST EPSS
- GHSA-jc5f-m375-x98q · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences