CSL DualCom GPRS CS2300-R devices with firmware 1.25 through 3.53 do not require authentication from Alarm Receiving Center (ARC) servers, which allows man-in-the-middle attackers to bypass intended access restrictions via a spoofed HSxx response.
http://www.kb.cert.org/vuls/id/BLUU-A3NQAL
http://www.kb.cert.org/vuls/id/428280
Source: Mitre, NVD
Published: 2015-11-25
Updated: 2026-06-17
Base Score: 5.8
Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:N
Severity: Medium
Base Score: 7.4
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Severity: High
EPSS: 0.00359