The ThreadX-based firmware on Marvell Avastar Wi-Fi devices, models 88W8787, 88W8797…
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 3.0 · NVD. Fix status from CNA. Impact type from CWE-787 and the CVSS impact.
Summary
The ThreadX-based firmware on Marvell Avastar Wi-Fi devices, models 88W8787, 88W8797, 88W8801, 88W8897, and 88W8997, allows remote attackers to execute arbitrary code or cause a denial of service (block pool overflow) via malformed Wi-Fi packets during identification of available Wi-Fi networks. Exploitation of the Wi-Fi device can lead to exploitation of the host application processor in some cases, but this depends on several factors including host OS hardening and the availability of DMA.
Why it matters now
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 · 10
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:marvell:88w8787_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Marvell |
| cpe:2.3:h:marvell:88w8787:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Marvell |
| cpe:2.3:o:marvell:88w8797_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Marvell |
| cpe:2.3:h:marvell:88w8797:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Marvell |
| cpe:2.3:o:marvell:88w8801_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Marvell |
| cpe:2.3:h:marvell:88w8801:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Marvell |
| cpe:2.3:o:marvell:88w8897_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Marvell |
| cpe:2.3:h:marvell:88w8897:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Marvell |
| cpe:2.3:o:marvell:88w8997_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Marvell |
| cpe:2.3:h:marvell:88w8997:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Marvell |
- cpe:2.3:o:marvell:88w8787_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Marvell
- cpe:2.3:h:marvell:88w8787:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Marvell
- cpe:2.3:o:marvell:88w8797_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Marvell
- cpe:2.3:h:marvell:88w8797:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Marvell
- cpe:2.3:o:marvell:88w8801_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Marvell
- cpe:2.3:h:marvell:88w8801:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Marvell
- cpe:2.3:o:marvell:88w8897_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Marvell
- cpe:2.3:h:marvell:88w8897:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Marvell
- cpe:2.3:o:marvell:88w8997_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Marvell
- cpe:2.3:h:marvell:88w8997:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Marvell
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2019-6496
- 2026-10-03 Alias added: GHSA-vx6q-ffvw-7c86
References
Exploit 2
Sources
- CVE-2019-6496 · CVE Program
- CVE-2019-6496 · NVD
- FIRST EPSS
- GHSA-vx6q-ffvw-7c86 · 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