CVE-2017-11120
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.
Does this matter?
A public exploit is published in Exploit-DB (verified) and the impact is critical, while EPSS rates exploitation at 9.1%. Anyone can run this; patch or mitigate before the next change window and check exposed instances for signs of use.
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.
- CVSS 3.0
- 9.8 CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 9.13% probability · 95th percentile
- Public exploits
- 1 in Exploit-DB · verified · first 25 September 2017
- CISA KEV
- Not listed
- Weakness
- CWE-119
- Affected
- broadcom/bcm4355c0 firmware · apple/iphone os · apple/tvos
- Source
- cve@mitre.org
EPSS moved from 7.8% on 21 September 2026 to 9.1% on 27 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
Public exploits (1)
Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.
References
- http://packetstormsecurity.com/files/144328/Broadcom-802.11k-Neighbor-Report-Response-Out-Of-Bounds-Write.htmlExploit, Third Party Advisory, VDB Entry
- http://www.securityfocus.com/bid/100984Third Party Advisory, VDB Entry
- https://bugs.chromium.org/p/project-zero/issues/detail?id=1289Exploit, Issue Tracking, Third Party Advisory
- https://lists.apple.com/archives/security-announce/2017/Sep/msg00007.htmlMailing List, Third Party Advisory
- https://lists.apple.com/archives/security-announce/2017/Sep/msg00009.htmlMailing List, Third Party Advisory
- https://source.android.com/security/bulletin/2017-09-01Third Party Advisory
- https://support.apple.com/HT208112Third Party Advisory
- https://support.apple.com/HT208113Third Party Advisory
- https://support.apple.com/en-us/HT208112Third Party Advisory
- https://support.apple.com/en-us/HT208113Third Party Advisory
- https://www.exploit-db.com/exploits/42784/Exploit, Third Party Advisory, VDB Entry
- http://packetstormsecurity.com/files/144328/Broadcom-802.11k-Neighbor-Report-Response-Out-Of-Bounds-Write.htmlExploit, Third Party Advisory, VDB Entry
- http://www.securityfocus.com/bid/100984Third Party Advisory, VDB Entry
- https://bugs.chromium.org/p/project-zero/issues/detail?id=1289Exploit, Issue Tracking, Third Party Advisory
- https://lists.apple.com/archives/security-announce/2017/Sep/msg00007.htmlMailing List, Third Party Advisory
- https://lists.apple.com/archives/security-announce/2017/Sep/msg00009.htmlMailing List, Third Party Advisory
- https://source.android.com/security/bulletin/2017-09-01Third Party Advisory
- https://support.apple.com/HT208112Third Party Advisory
- https://support.apple.com/HT208113Third Party Advisory
- https://support.apple.com/en-us/HT208112Third Party Advisory
- https://support.apple.com/en-us/HT208113Third Party Advisory
- https://www.exploit-db.com/exploits/42784/Exploit, Third Party Advisory, VDB Entry
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.