CVE-2026-18411

Use of hard-coded cryptographic key in Acrisure KARR BT and DR-100

Published Aug 5, 2026 CVSS 4.0 · 7.2 High EPSS < 1% KEV · Not listed
Description
The KARR Security System and SWDS dealer-installed automotive anti-theft systems use a shared Bluetooth authentication key across affected devices. An attacker within Bluetooth range can leverage this weakness to issue unauthorized commands to the vehicle, potentially allowing unauthorized access to vehicle functions, including door unlocking and engine immobilization.

Remediation

Vendor Solution

Acrisure Protection Group released a firmware update on July 20, 2026, to address this vulnerability. They recommend that affected users should follow the directions found here: https://www.karrsecurity.com/karr-security-firmware-update-instructions.

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Acrisure
Acrisure dr-100
Acrisure karr Bt
Vendors & Products Acrisure
Acrisure dr-100
Acrisure karr Bt
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description The KARR Security System and SWDS dealer-installed automotive anti-theft systems use a shared Bluetooth authentication key across affected devices. An attacker within Bluetooth range can leverage this weakness to issue unauthorized commands to the vehicle, potentially allowing unauthorized access to vehicle functions, including door unlocking and engine immobilization.
Title Use of hard-coded cryptographic key in Acrisure KARR BT and DR-100
Weaknesses CWE-321
References
Metrics cvssV3_1

{'score': 8.1, 'vector': 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H'}

cvssV4_0

{'score': 7.2, 'vector': 'CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
icscert
Published
Updated
Aug 6, 2026, 1:46 PM
Reserved
Jul 30, 2026, 5:01 PM
Status
Deferred
Published
Aug 5, 2026, 9:16 PM
Modified
Sep 8, 2026, 7:30 PM