Public proof of conceptFix available

CVE-2017-11120

Q: Is CVE-2017-11120 actively exploited?

Active exploitation of CVE-2017-11120 has not been confirmed. Its EPSS score was 9.1% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2017-11120?

CVE-2017-11120 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

A public proof of concept exists; no exploitation attested.

Published2017-09-28
Fixed in11.0
WeaknessCWE-119

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

On Broadcom BCM4355C0 Wi-Fi chips 9.44.78.27.0.1.56 and other chips, an attacker can craft a malformed RRM neighbor report frame to trigger an internal buffer overflow in the Wi-Fi firmware, aka B-V2017061204.

Timeline

dates in UTC

2017-09-2801:29CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2017-11120?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2017-11120?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Apple iphone os

Branch	Affected	Fixed in	Source
11.0	< 11.0	11.0	NVD

Apple tvos

Branch	Affected	Fixed in	Source
11.0	< 11.0	11.0	NVD

Broadcom bcm4355c0 firmwareversion to verify

Branch	Affected	Fixed in	Source
9.44	= 9.44.78.27.0.1.56	no fix published	NVD

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Update Apple iphone os to 11.0

Detection

read 2026-10-23 19:23 UTC

Nuclei template: none so far
Exploit-DB: EDB-42784
Proof-of-concept repositories: none listed

Sources

NVDCVSS 3.09.8read 2026-10-23
NVDCVSS 2.010read 2026-10-23
NVDweakness (CWE)CWE-119read 2026-10-23
FIRST EPSSEPSS score9.1 %2026-10-22
Exploit-DBdetectionread 2026-10-23

Technical details

CVSS v3 Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published: 2017-09-28
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2017-11120?

Is CVE-2017-11120 actively exploited?

Active exploitation of CVE-2017-11120 has not been confirmed. Its EPSS score was 9.1% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2017-11120?

CVE-2017-11120 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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