CVE-2019-15126
Specifically timed and handcrafted traffic can cause internal errors (related to state transitions) in a WLAN device that lead to improper layer 2 Wi-Fi encryption with a consequent possibility of information disclosure over the air for a discrete set…
Does this matter?
A public exploit is published in Exploit-DB, so the technical barrier is gone even though the severity is low and EPSS is 7.3%. Treat it as high on anything reachable from the internet.
Description
An issue was discovered on Broadcom Wi-Fi client devices. Specifically timed and handcrafted traffic can cause internal errors (related to state transitions) in a WLAN device that lead to improper layer 2 Wi-Fi encryption with a consequent possibility of information disclosure over the air for a discrete set of traffic, a different vulnerability than CVE-2019-9500, CVE-2019-9501, CVE-2019-9502, and CVE-2019-9503.
- CVSS 3.1
- 3.1 LOWCVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
- EPSS
- 7.26% probability · 94th percentile
- Public exploits
- 1 in Exploit-DB · first 18 March 2020
- CISA KEV
- Not listed
- Weakness
- CWE-367
- Affected
- apple/ipados · apple/iphone os · apple/mac os x · broadcom/bcm4389 firmware · broadcom/bcm43012 firmware · broadcom/bcm43013 firmware · broadcom/bcm4375 firmware · broadcom/bcm43752 firmware · broadcom/bcm4356 firmware
- Source
- cve@mitre.org
EPSS 7.3% since 27 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
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/156809/Broadcom-Wi-Fi-KR00K-Proof-Of-Concept.html
- http://www.arubanetworks.com/assets/alert/ARUBA-PSA-2020-003.txt
- http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20200527-01-wifi-en
- http://www.huawei.com/en/psirt/security-notices/huawei-sn-20200228-01-kr00k-en
- https://cert-portal.siemens.com/productcert/pdf/ssa-712518.pdf
- https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2020-0001
- https://support.apple.com/kb/HT210721Third Party Advisory
- https://support.apple.com/kb/HT210722Third Party Advisory
- https://support.apple.com/kb/HT210788
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200226-wi-fi-info-disclosure
- https://us-cert.cisa.gov/ics/advisories/icsa-20-224-05
- https://www.mist.com/documentation/mist-security-advisory-kr00k-attack-faq/
- https://www.synology.com/security/advisory/Synology_SA_20_03
- http://packetstormsecurity.com/files/156809/Broadcom-Wi-Fi-KR00K-Proof-Of-Concept.html
- http://www.arubanetworks.com/assets/alert/ARUBA-PSA-2020-003.txt
- http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20200527-01-wifi-en
- http://www.huawei.com/en/psirt/security-notices/huawei-sn-20200228-01-kr00k-en
- https://cert-portal.siemens.com/productcert/pdf/ssa-712518.pdf
- https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2020-0001
- https://support.apple.com/kb/HT210721Third Party Advisory
- https://support.apple.com/kb/HT210722Third Party Advisory
- https://support.apple.com/kb/HT210788
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200226-wi-fi-info-disclosure
- https://us-cert.cisa.gov/ics/advisories/icsa-20-224-05
- https://www.mist.com/documentation/mist-security-advisory-kr00k-attack-faq/
- https://www.synology.com/security/advisory/Synology_SA_20_03
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.