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CVE-2019-15126

27
FAUCET Score

CVE-2019-15126, also known as Kr00k, affects Broadcom and Apple Wi-Fi client devices. This vulnerability allows an attacker to decrypt a discrete set of Wi-Fi traffic due to improper Layer 2 encryption caused by specially timed and crafted traffic. With a CVSS score of 3.1 (LOW), it requires adjacent network access and high attack complexity, leading to potential information disclosure. While not in the KEV catalog, public exploit code (EDB-48233) exists, and it has garnered significant community discussion and media coverage, indicating active interest and potential for exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
< 13.2CPE matchmatch criteria
cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*
< 13.2CPE matchmatch criteria
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
< 10.15.1CPE matchmatch criteria
cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:broadcom:bcm4389_firmware:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:broadcom:bcm43012_firmware:-:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

3.1LOW

CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

Attack Vector
ADJACENT_NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
1.6
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
7.71%
Probability of exploitation in next 30 days
EPSS Percentile
94.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
ExploitDB: EDB-48233 · Mar 18, 2020
This CVE's current EPSS score of 0.0771 is in the 100th percentile among its peer group of 122 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.0 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

coollabspatch availablevia llm_extracted
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: linux-firmware
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: linux-firmware

Vendor Advisories (3)

microsoft2023-Feb/CVE-2019-15126

MITRE: CVE-2019-15126 Specifically timed and handcrafted traffic can cause internal errors (related to state transitions) in a WLAN device

Feb 14, 2023
coollabsllm-coollabs-b9df5db64b2a2151

Kr00k NO IMPACT Notification

Mar 3, 2020
redhatCVE-2019-15126Moderate

linux-firmware: Transmission of data encrypted with an all-zero session key after disassociation

Feb 5, 2020

References

packetstormsecurity.com / files/156809/Broadcom-Wi-Fi-KR00K-Proof-Of-Concept.html
cert-portal.siemens.com / productcert/pdf/ssa-712518.pdf
psirt.global.sonicwall.com / vuln-detail/SNWLID-2020-0001
support.apple.com / kb/HT210721
Third Party Advisory
support.apple.com / kb/HT210722
Third Party Advisory
support.apple.com / kb/HT210788
tools.cisco.com / security/center/content/CiscoSecurityAdvisory/cisco-sa-20200226-wi-fi-info-disclosure
us-cert.cisa.gov / ics/advisories/icsa-20-224-05
mist.com / documentation/mist-security-advisory-kr00k-attack-faq
synology.com / security/advisory/Synology_SA_20_03
arubanetworks.com / assets/alert/ARUBA-PSA-2020-003.txt
huawei.com / en/psirt/security-advisories/huawei-sa-20200527-01-wifi-en
huawei.com / en/psirt/security-notices/huawei-sn-20200228-01-kr00k-en