CVE-2017-11120
CVE-2017-11120 is a critical-severity vulnerability in Broadcom Bcm4355c0 Firmware with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-119.
Key facts
- Severity: Critical (CVSS 3.x base score 9.8)
- CVSS v2: 10.0
- EPSS exploit prediction: 9% (95th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-119
- Affected product: Broadcom Bcm4355c0 Firmware
- Published:
- Last modified:
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.
Frequently asked questions
- What is 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.
- How severe is CVE-2017-11120?
- CVE-2017-11120 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2017-11120 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 9% (95th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2017-11120?
- CVE-2017-11120 primarily affects Broadcom Bcm4355c0 Firmware. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2017-11120?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- When was CVE-2017-11120 published?
- CVE-2017-11120 was published on 2017-09-28 and last updated on 2026-06-17.
References
- http://packetstormsecurity.com/files/144328/Broadcom-802.11k-Neighbor-Report-Response-Out-Of-Bounds-Write.html
- http://www.securityfocus.com/bid/100984
- https://bugs.chromium.org/p/project-zero/issues/detail?id=1289
- https://lists.apple.com/archives/security-announce/2017/Sep/msg00007.html
- https://lists.apple.com/archives/security-announce/2017/Sep/msg00009.html
- https://source.android.com/security/bulletin/2017-09-01
- https://support.apple.com/HT208112
- https://support.apple.com/HT208113
- https://support.apple.com/en-us/HT208112
- https://support.apple.com/en-us/HT208113
- https://www.exploit-db.com/exploits/42784/
Affected products (3)
- cpe:2.3:o:broadcom:bcm4355c0_firmware:9.44.78.27.0.1.56:*:*:*:*:*:*:*
- cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
- cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*
More vulnerabilities in Broadcom Bcm4355c0 Firmware
- CVE-2017-11121 — Critical (CVSS 9.8): On Broadcom BCM4355C0 Wi-Fi chips 9.44.78.27.0.1.56 and other chips, properly crafted malicious over-the-air Fast…
- CVE-2017-11122 — High (CVSS 7.5): On Broadcom BCM4355C0 Wi-Fi chips 9.44.78.27.0.1.56, an attacker can trigger an information leak due to insufficient…
All CVEs affecting Broadcom Bcm4355c0 Firmware →
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