Certain NETGEAR devices are affected by a stack-based buffer overflow by an authenticated…
Priority LOW 31CWE-787Published · Updated
Key facts
- Attack vector
- Adjacent network
- Privileges required
- High
- 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-787 and the CVSS impact.
Summary
Certain NETGEAR devices are affected by a stack-based buffer overflow by an authenticated user. This affects D6100 before 1.0.0.57, R6100 before 1.0.1.20, R7800 before 1.0.2.40, WNDR3700v4 before 1.0.2.92, WNDR4300 before 1.0.2.94, WNDR4300v2 before 1.0.0.50, WNDR4500v3 before 1.0.0.50, and WNR2000v5 before 1.0.0.62.
Why it matters now
EPSS 0.00593 48th 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 · 16
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:netgear:d6100_firmware:*:*:*:*:*:*:*:* | before 1.0.0.57 | Vulnerable | NETGEAR |
| cpe:2.3:h:netgear:d6100:-:*:*:*:*:*:*:* | not specified by NVD | Running on | NETGEAR |
| cpe:2.3:o:netgear:r6100_firmware:*:*:*:*:*:*:*:* | before 1.0.1.20 | Vulnerable | NETGEAR |
| cpe:2.3:h:netgear:r6100:-:*:*:*:*:*:*:* | not specified by NVD | Running on | NETGEAR |
| cpe:2.3:o:netgear:r7800_firmware:*:*:*:*:*:*:*:* | before 1.0.2.40 | Vulnerable | NETGEAR |
| cpe:2.3:h:netgear:r7800:-:*:*:*:*:*:*:* | not specified by NVD | Running on | NETGEAR |
| cpe:2.3:o:netgear:wndr3700_firmware:*:*:*:*:*:*:*:* | before 1.0.2.92 | Vulnerable | NETGEAR |
| cpe:2.3:h:netgear:wndr3700:v4:*:*:*:*:*:*:* | v4 | Running on | NETGEAR |
| cpe:2.3:o:netgear:wndr4300_firmware:*:*:*:*:*:*:*:* | before 1.0.2.92 | Vulnerable | NETGEAR |
| cpe:2.3:h:netgear:wndr4300:-:*:*:*:*:*:*:* | not specified by NVD | Running on | NETGEAR |
- cpe:2.3:o:netgear:d6100_firmware:*:*:*:*:*:*:*:* Versions before 1.0.0.57 Vulnerable ·NETGEAR
- cpe:2.3:h:netgear:d6100:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NETGEAR
- cpe:2.3:o:netgear:r6100_firmware:*:*:*:*:*:*:*:* Versions before 1.0.1.20 Vulnerable ·NETGEAR
- cpe:2.3:h:netgear:r6100:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NETGEAR
- cpe:2.3:o:netgear:r7800_firmware:*:*:*:*:*:*:*:* Versions before 1.0.2.40 Vulnerable ·NETGEAR
- cpe:2.3:h:netgear:r7800:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NETGEAR
- cpe:2.3:o:netgear:wndr3700_firmware:*:*:*:*:*:*:*:* Versions before 1.0.2.92 Vulnerable ·NETGEAR
- cpe:2.3:h:netgear:wndr3700:v4:*:*:*:*:*:*:* Versions v4 Running on ·NETGEAR
- cpe:2.3:o:netgear:wndr4300_firmware:*:*:*:*:*:*:*:* Versions before 1.0.2.92 Vulnerable ·NETGEAR
- cpe:2.3:h:netgear:wndr4300:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NETGEAR
Show 6 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:netgear:wndr4300_firmware:*:*:*:*:*:*:*:* | before 1.0.0.50 | Vulnerable | NETGEAR |
| cpe:2.3:h:netgear:wndr4300:v2:*:*:*:*:*:*:* | v2 | Running on | NETGEAR |
| cpe:2.3:o:netgear:wndr4500_firmware:*:*:*:*:*:*:*:* | before 1.0.0.50 | Vulnerable | NETGEAR |
| cpe:2.3:h:netgear:wndr4500:v3:*:*:*:*:*:*:* | v3 | Running on | NETGEAR |
| cpe:2.3:o:netgear:wnr2000_firmware:*:*:*:*:*:*:*:* | before 1.0.0.62 | Vulnerable | NETGEAR |
| cpe:2.3:h:netgear:wnr2000:v5:*:*:*:*:*:*:* | v5 | Running on | NETGEAR |
- cpe:2.3:o:netgear:wndr4300_firmware:*:*:*:*:*:*:*:* Versions before 1.0.0.50 Vulnerable ·NETGEAR
- cpe:2.3:h:netgear:wndr4300:v2:*:*:*:*:*:*:* Versions v2 Running on ·NETGEAR
- cpe:2.3:o:netgear:wndr4500_firmware:*:*:*:*:*:*:*:* Versions before 1.0.0.50 Vulnerable ·NETGEAR
- cpe:2.3:h:netgear:wndr4500:v3:*:*:*:*:*:*:* Versions v3 Running on ·NETGEAR
- cpe:2.3:o:netgear:wnr2000_firmware:*:*:*:*:*:*:*:* Versions before 1.0.0.62 Vulnerable ·NETGEAR
- cpe:2.3:h:netgear:wnr2000:v5:*:*:*:*:*:*:* Versions v5 Running on ·NETGEAR
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2018-21191
- 2026-10-03 Alias added: GHSA-jr3m-4g36-rv56
References
More NETGEAR D6100 Firmware vulnerabilities
- TI-2016-08250 The NETGEAR WNR2000v5 router contains a buffer overflow in the hidden_lang_avi parameter… KEVCVSS 3.1CRITICAL 9.8
- TI-2023-09143 An exploitable firmware modification vulnerability was discovered in certain Netgear… CVSS 3.1HIGH 7.4
- TI-2017-13916 Certain NETGEAR devices are affected by command injection by an unauthenticated attacker. CVSS 3.1HIGH 8.8
- TI-2017-13914 Certain NETGEAR devices are affected by command injection by an unauthenticated attacker. CVSS 3.1HIGH 8.8
- TI-2018-15170 Certain NETGEAR devices are affected by command injection by an unauthenticated attacker. CVSS 3.1HIGH 8.8
- TI-2018-15075 Certain NETGEAR devices are affected by command injection by an unauthenticated attacker. CVSS 3.1HIGH 8.8
Sources
- CVE-2018-21191 · CVE Program
- CVE-2018-21191 · NVD
- FIRST EPSS
- GHSA-jr3m-4g36-rv56 · 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