CVE-2019-6496

Name: CVE-2019-6496
Creator: NVD / NIST
Published: 2019-01-20T20:29:00.917+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 6.62%

Last modified Jun 17, 2026

CVE-2019-6496 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 6.62% chance of exploitation in the next 30 days.

Description

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.

Metrics

EPSS Probability

6.62%

93.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-787

Affected Software

Vendor	Product	Versions
Marvell	88w8787 Firmware	All versions
Marvell	88w8797 Firmware	All versions
Marvell	88w8801 Firmware	All versions
Marvell	88w8897 Firmware	All versions
Marvell	88w8997 Firmware	All versions

References

http://www.securityfocus.com/bid/106865Third Party Advisory, VDB Entry
https://2018.zeronights.ru/wp-content/uploads/materials/19-Researching-Marvell-Avastar-Wi-Fi.pdfExploit, Third Party Advisory
https://embedi.org/blog/remotely-compromise-devices-by-using-bugs-in-marvell-avastar-wi-fi-from-zero-knowledge-to-zero-click-rce/Third Party Advisory
https://www.kb.cert.org/vuls/id/730261/Third Party Advisory, US Government Resource
https://www.scribd.com/document/398350818/WiFi-CVE-2019-6496-Marvell-s-StatementThird Party Advisory
https://www.synology.com/security/advisory/Synology_SA_19_07Third Party Advisory
https://www.zdnet.com/article/wifi-firmware-bug-affects-laptops-smartphones-routers-gaming-devices/Exploit, Press/Media Coverage, Third Party Advisory
http://www.securityfocus.com/bid/106865Third Party Advisory, VDB Entry
https://2018.zeronights.ru/wp-content/uploads/materials/19-Researching-Marvell-Avastar-Wi-Fi.pdfExploit, Third Party Advisory
https://embedi.org/blog/remotely-compromise-devices-by-using-bugs-in-marvell-avastar-wi-fi-from-zero-knowledge-to-zero-click-rce/Third Party Advisory
https://www.kb.cert.org/vuls/id/730261/Third Party Advisory, US Government Resource
https://www.scribd.com/document/398350818/WiFi-CVE-2019-6496-Marvell-s-StatementThird Party Advisory
https://www.synology.com/security/advisory/Synology_SA_19_07Third Party Advisory
https://www.zdnet.com/article/wifi-firmware-bug-affects-laptops-smartphones-routers-gaming-devices/Exploit, Press/Media Coverage, Third Party Advisory

Timeline

Published: Jan 20, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-6496?

How severe is CVE-2019-6496?

Severity scoring for CVE-2019-6496 is pending analysis. The EPSS model estimates a 6.62% probability of exploitation in the next 30 days.

How do I fix CVE-2019-6496?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-6496?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST