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CVE-2017-11120

46
FAUCET Score

CVE-2017-11120 describes a critical buffer overflow vulnerability in Broadcom BCM4355C0 Wi-Fi chips, including those found in Apple iOS and tvOS devices. An unauthenticated attacker can trigger this flaw by sending a specially crafted RRM neighbor report frame. With a CVSS score of 9.8, this vulnerability allows for complete compromise of confidentiality, integrity, and availability. While not on the KEV catalog, public exploit code exists (EDB-42784) and it has garnered significant community discussion and media coverage, indicating high awareness and potential for exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
9.44.78.27.0.1.56CPE matchmatch criteria
cpe:2.3:o:broadcom:bcm4355c0_firmware:9.44.78.27.0.1.56:*:*:*:*:*:*:*
< 11.0CPE matchmatch criteria
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
< 11.0CPE matchmatch criteria
cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
9.13%
Probability of exploitation in next 30 days
EPSS Percentile
94.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
ExploitDB: EDB-42784 · Sep 25, 2017
This CVE's current EPSS score of 0.0913 is in the 90th percentile among its peer group of 36,835 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

packetstormsecurity.com / files/144328/Broadcom-802.11k-Neighbor-Report-Response-Out-Of-Bounds-Write.html
ExploitThird Party AdvisoryVDB Entry
bugs.chromium.org / p/project-zero/issues/detail
ExploitIssue TrackingThird Party Advisory
lists.apple.com / archives/security-announce/2017/Sep/msg00007.html
Mailing ListThird Party Advisory
lists.apple.com / archives/security-announce/2017/Sep/msg00009.html
Mailing ListThird Party Advisory
source.android.com / security/bulletin/2017-09-01
Third Party Advisory
support.apple.com / en-us/HT208112
Third Party Advisory
support.apple.com / en-us/HT208113
Third Party Advisory
support.apple.com / HT208112
Third Party Advisory
support.apple.com / HT208113
Third Party Advisory
exploit-db.com / exploits/42784
ExploitThird Party AdvisoryVDB Entry
securityfocus.com / bid/100984
Third Party AdvisoryVDB Entry