Broadcom brcmfmac driver is vulnerable to a heap buffer overflow
Noroxi assessment
Priority: Monitor (action score 34/100)
- The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
- Probability of exploitation in the next 30 days: 3.8% (FIRST EPSS); higher than 90% of all records.
- Someone on the same network segment can trigger it. No account or password is required. No user action is required. Special conditions such as timing or configuration are required.
- Fixed version: linux (Debian:12) 4.19.37-4; linux-4.9 (Debian:8) 4.9.168-1+deb9u3~deb8u1; linux (Debian:9) 4.9.168-1+deb9u3.
Low priority for now. Upgrade to linux (Debian:12) 4.19.37-4; linux-4.9 (Debian:8) 4.9.168-1+deb9u3~deb8u1; linux (Debian:9) 4.9.168-1+deb9u3 or later.
Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it
Primary sources: NVD · CVE.org · FIRST EPSS
The Broadcom brcmfmac WiFi driver prior to commit 1b5e2423164b3670e8bc9174e4762d297990deff is vulnerable to a heap buffer overflow. If the Wake-up on Wireless LAN functionality is configured, a malicious event frame can be constructed to trigger an heap buffer overflow in the brcmf_wowl_nd_results function. This vulnerability can be exploited with compromised chipsets to compromise the host, or when used in combination with CVE-2019-9503, can be used remotely. In the worst case scenario, by sending specially-crafted WiFi packets, a remote, unauthenticated attacker may be able to execute arbitrary code on a vulnerable system. More typically, this vulnerability will result in denial-of-service conditions.
- Published
- Jan 16, 2020
- Updated
- Jun 16, 2026
- EPSS
- 3.8% · 90th percentile
- CWE
- CWE-122
Report tools
Action score
34
Monitor
Low priority for now.
- CVSS
- 33 / 40 · 8.3 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 1 / 30 · 3.8%
CNA vs NVD score
- NVD
- 8.3
- CNA · certcc
- 7.9
- 0.4 point gap
CVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Get told when this record changes
- Not in KEV: no record of exploitation in the wild
- No public exploit code on record
- A fix has been released
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Noroxi analysis
What does it mean in your environment?
The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.
We use this product, ask for helpAffected systems
Is your version affected?
Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.
| Vendor | Product | CPE |
|---|---|---|
| broadcom | brcmfmac driver | cpe:2.3:a:broadcom:brcmfmac_driver |
| linux | linux kernel | cpe:2.3:o:linux:linux_kernel |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- broadcom brcmfmac driverall versions
- linux linux kernel4.5 and later · before 4.9.181
- linux linux kernel4.10 and later · before 4.14.123
- linux linux kernel4.15 and later · before 4.19.47
- linux linux kernel4.20 and later · before 5.0.20
Versions reported by the vendor
Affected version ranges reported by the assigning authority (certcc). Independent of NVD's CPE analysis and usually ahead of it.
Broadcom brcmfmac WiFi driver
- commit prior to 1b5e2423164b3670e8bc9174e4762d297990deffaffected
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:12 | linux | before 4.19.37-4 | 4.19.37-4 |
| Debian:8 | linux-4.9 | before 4.9.168-1+deb9u3~deb8u1 | 4.9.168-1+deb9u3~deb8u1 |
| Debian:9 | linux | before 4.9.168-1+deb9u3 | 4.9.168-1+deb9u3 |
| openSUSE:Leap 15.0 | kernel-debug | before 4.12.14-lp150.12.61.1 | 4.12.14-lp150.12.61.1 |
| openSUSE:Leap 15.0 | kernel-default | before 4.12.14-lp150.12.61.1 | 4.12.14-lp150.12.61.1 |
| openSUSE:Leap 15.0 | kernel-docs | before 4.12.14-lp150.12.61.1 | 4.12.14-lp150.12.61.1 |
| openSUSE:Leap 15.0 | kernel-kvmsmall | before 4.12.14-lp150.12.61.1 | 4.12.14-lp150.12.61.1 |
| openSUSE:Leap 15.0 | kernel-obs-build | before 4.12.14-lp150.12.61.1 | 4.12.14-lp150.12.61.1 |
| openSUSE:Leap 15.0 | kernel-obs-qa | before 4.12.14-lp150.12.61.1 | 4.12.14-lp150.12.61.1 |
| openSUSE:Leap 15.0 | kernel-source | before 4.12.14-lp150.12.61.1 | 4.12.14-lp150.12.61.1 |
| openSUSE:Leap 15.0 | kernel-syms | before 4.12.14-lp150.12.61.1 | 4.12.14-lp150.12.61.1 |
| openSUSE:Leap 15.0 | kernel-vanilla | before 4.12.14-lp150.12.61.1 | 4.12.14-lp150.12.61.1 |
| openSUSE:Leap 15.1 | kernel-debug | before 4.12.14-lp151.28.4.1 | 4.12.14-lp151.28.4.1 |
| openSUSE:Leap 15.1 | kernel-default | before 4.12.14-lp151.28.4.1 | 4.12.14-lp151.28.4.1 |
| openSUSE:Leap 15.1 | kernel-docs | before 4.12.14-lp151.28.4.1 | 4.12.14-lp151.28.4.1 |
| openSUSE:Leap 15.1 | kernel-kvmsmall | before 4.12.14-lp151.28.4.1 | 4.12.14-lp151.28.4.1 |
| openSUSE:Leap 15.1 | kernel-obs-build | before 4.12.14-lp151.28.4.1 | 4.12.14-lp151.28.4.1 |
| openSUSE:Leap 15.1 | kernel-obs-qa | before 4.12.14-lp151.28.4.1 | 4.12.14-lp151.28.4.1 |
| openSUSE:Leap 15.1 | kernel-source | before 4.12.14-lp151.28.4.1 | 4.12.14-lp151.28.4.1 |
| openSUSE:Leap 15.1 | kernel-syms | before 4.12.14-lp151.28.4.1 | 4.12.14-lp151.28.4.1 |
| openSUSE:Leap 15.1 | kernel-vanilla | before 4.12.14-lp151.28.4.1 | 4.12.14-lp151.28.4.1 |
| Red Hat:enterprise_linux:7::client | bpftool | before 0:3.10.0-1062.1.1.el7 | 0:3.10.0-1062.1.1.el7 |
| Red Hat:enterprise_linux:7::client | bpftool-debuginfo | before 0:3.10.0-1062.1.1.el7 | 0:3.10.0-1062.1.1.el7 |
| Red Hat:enterprise_linux:7::client | kernel | before 0:3.10.0-1062.1.1.el7 | 0:3.10.0-1062.1.1.el7 |
+96
Same product
broadcom: all recordsOther highest-scoring records for the same primary product.
- CVE-2019-9503Broadcom brcmfmac driver is vulnerable to a frame validation bypass34Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| debian:linux | 4.19.37-4 · Debian:12 | Package registry (OSV) |
| debian:linux-4.9 | 4.9.168-1+deb9u3~deb8u1 · Debian:8 | Package registry (OSV) |
| opensuse:kernel-debug | 4.12.14-lp150.12.61.1 · openSUSE:Leap 15.0 | Package registry (OSV) |
| opensuse:kernel-default | 4.12.14-lp150.12.61.1 · openSUSE:Leap 15.0 | Package registry (OSV) |
| opensuse:kernel-docs | 4.12.14-lp150.12.61.1 · openSUSE:Leap 15.0 | Package registry (OSV) |
| opensuse:kernel-kvmsmall | 4.12.14-lp150.12.61.1 · openSUSE:Leap 15.0 | Package registry (OSV) |
| opensuse:kernel-obs-build | 4.12.14-lp150.12.61.1 · openSUSE:Leap 15.0 | Package registry (OSV) |
| opensuse:kernel-obs-qa | 4.12.14-lp150.12.61.1 · openSUSE:Leap 15.0 | Package registry (OSV) |
| opensuse:kernel-source | 4.12.14-lp150.12.61.1 · openSUSE:Leap 15.0 | Package registry (OSV) |
| opensuse:kernel-syms | 4.12.14-lp150.12.61.1 · openSUSE:Leap 15.0 | Package registry (OSV) |
| opensuse:kernel-vanilla | 4.12.14-lp150.12.61.1 · openSUSE:Leap 15.0 | Package registry (OSV) |
| red hat:bpftool | 0:3.10.0-1062.1.1.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:bpftool-debuginfo | 0:3.10.0-1062.1.1.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:kernel | 0:3.10.0-1062.1.1.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:kernel-abi-whitelists | 0:3.10.0-1062.1.1.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:kernel-debug | 0:3.10.0-1062.1.1.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:kernel-debug-debuginfo | 0:3.10.0-1062.1.1.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:kernel-debug-devel | 0:3.10.0-1062.1.1.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:kernel-debuginfo | 0:3.10.0-1062.1.1.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:kernel-debuginfo-common-x86_64 | 0:3.10.0-1062.1.1.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:kernel-devel | 0:3.10.0-1062.1.1.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:kernel-doc | 0:3.10.0-1062.1.1.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:kernel-tools | 0:3.10.0-1062.1.1.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| suse:kernel-azure | 4.12.14-5.27.1 · SUSE:Linux Enterprise Module for Public Cloud 15 | Package registry (OSV) |
| suse:kernel-default | 4.12.14-95.16.1 · SUSE:Linux Enterprise Desktop 12 SP4 | Package registry (OSV) |
| suse:kernel-docs | 4.12.14-95.16.1 · SUSE:Linux Enterprise Software Development Kit 12 SP4 | Package registry (OSV) |
| suse:kernel-livepatch-SLE15_Update_10 | 1-1.3.1 · SUSE:Linux Enterprise Live Patching 15 | Package registry (OSV) |
| suse:kernel-obs-build | 4.12.14-95.16.1 · SUSE:Linux Enterprise Software Development Kit 12 SP4 | Package registry (OSV) |
| suse:kernel-source | 4.12.14-95.16.1 · SUSE:Linux Enterprise Desktop 12 SP4 | Package registry (OSV) |
| suse:kernel-source-azure | 4.12.14-5.27.1 · SUSE:Linux Enterprise Module for Public Cloud 15 | Package registry (OSV) |
+5
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Someone on the same network segment can trigger it.
- No account or password is required.
- No user action is required.
- Special conditions such as timing or configuration are required.
If successful
- Confidentiality
- high · data can be read
- Integrity
- high · data or configuration can be modified
- Availability
- high · the service can be disrupted
Impact can extend beyond the vulnerable component (scope changes).
- Attack vector
- Adjacent
- Attack complexity
- High
- Privileges required
- None
- User interaction
- None
- Scope
- Changed
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
Weakness class (CWE)
CWE-122 · Heap-based Buffer OverflowCVSS vector
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
ATT&CK techniques
—
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
Show all references (1 more)Show less
Vendor advisories and official records. Exploit/PoC links are deliberately left out.