CVE-2017-11121
On Broadcom BCM4355C0 Wi-Fi chips 9.44.78.27.0.1.56 and other chips, properly crafted malicious over-the-air Fast Transition frames can potentially trigger internal Wi-Fi firmware heap and/or stack overflows, leading to denial of service or other…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.79%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
On Broadcom BCM4355C0 Wi-Fi chips 9.44.78.27.0.1.56 and other chips, properly crafted malicious over-the-air Fast Transition frames can potentially trigger internal Wi-Fi firmware heap and/or stack overflows, leading to denial of service or other effects, aka B-V2017061205.
- 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
- 2.79% probability · 86th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-119
- Affected
- broadcom/bcm4355c0 firmware · apple/iphone os · apple/tvos
- Source
- cve@mitre.org
EPSS 2.8% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://packetstormsecurity.com/files/144329/Broadcom-802.11r-FT-Reassociation-Response-Overflows.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=1291Exploit, 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
- http://packetstormsecurity.com/files/144329/Broadcom-802.11r-FT-Reassociation-Response-Overflows.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=1291Exploit, 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
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.