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CVE-2017-6956

28
FAUCET Score

CVE-2017-6956 describes a stack buffer overflow vulnerability in Broadcom Wi-Fi HardMAC SoCs with fbt firmware. This flaw allows for remote code execution when processing a crafted 802.11r authentication response containing an overly long R0KH-ID field within a Fast BSS Transition Information Element. Rated with a CVSS score of 8.8 (High), this vulnerability is remotely exploitable with low attack complexity, potentially leading to full compromise of confidentiality, integrity, and availability. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
6.37.34.40CPE matchmatch criteria
cpe:2.3:o:broadcom:hardmac_wi-fi_soc_firmware:6.37.34.40:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.8HIGH

CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.98%
Probability of exploitation in next 30 days
EPSS Percentile
78.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0198 is in the 88th percentile among its peer group of 1,859 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.2 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

bugs.chromium.org / p/project-zero/issues/detail
Third Party Advisory
googleprojectzero.blogspot.com / 2017/04/over-air-exploiting-broadcoms-wi-fi_4.html
Third Party Advisory