CVE-2017-6957

Name: CVE-2017-6957
Creator: NVD / NIST
Published: 2017-03-27T14:59:00.227+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 4.59%

Last modified Jun 17, 2026

CVE-2017-6957 is a vulnerability of currently unknown severity. Stack-based buffer overflow in the firmware in Broadcom Wi-Fi HardMAC SoC chips, when the firmware supports CCKM Fast and Secure Roaming and the feature is enabled in RAM, allows remote attackers to execute arbitrary code via a crafted reassociation response frame with a Cisco IE (156).. EPSS estimates a 4.59% chance of exploitation in the next 30 days.

Description

Stack-based buffer overflow in the firmware in Broadcom Wi-Fi HardMAC SoC chips, when the firmware supports CCKM Fast and Secure Roaming and the feature is enabled in RAM, allows remote attackers to execute arbitrary code via a crafted reassociation response frame with a Cisco IE (156).

Metrics

EPSS Probability

4.59%

90.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-119

Affected Software

Vendor	Product	Versions
Broadcom	Bcm4339 Soc Firmware	6.37.34.40

References

http://packetstormsecurity.com/files/141803/Broadcom-Stack-Buffer-Overflow.htmlExploit, Third Party Advisory, VDB Entry
http://www.securityfocus.com/bid/97054Third Party Advisory, VDB Entry
https://bugs.chromium.org/p/project-zero/issues/detail?id=1051Third Party Advisory
http://packetstormsecurity.com/files/141803/Broadcom-Stack-Buffer-Overflow.htmlExploit, Third Party Advisory, VDB Entry
http://www.securityfocus.com/bid/97054Third Party Advisory, VDB Entry
https://bugs.chromium.org/p/project-zero/issues/detail?id=1051Third Party Advisory

Timeline

Published: Mar 27, 2017
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2017-6957?

How severe is CVE-2017-6957?

Severity scoring for CVE-2017-6957 is pending analysis. The EPSS model estimates a 4.59% probability of exploitation in the next 30 days.

How do I fix CVE-2017-6957?

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-2017-6957?

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

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Source: NVD / NIST