CVE-2017-7588

CRITICAL

Brother MFC/DCP/ADS/HL Firmware - Improper Authentication via AuthCookie Exposure

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2017-7588. PoCs published by Patryk Bogdan.

AI-analyzed exploit summary This exploit bypasses authentication on Brother devices by leveraging a flaw where a valid authorization cookie is issued even after a failed login. It can either silently retrieve the cookie or change the device password.

Description

On certain Brother devices, authorization is mishandled by including a valid AuthCookie cookie in the HTTP response to a failed login attempt. Affected models are: MFC-J6973CDW MFC-J4420DW MFC-8710DW MFC-J4620DW MFC-L8850CDW MFC-J3720 MFC-J6520DW MFC-L2740DW MFC-J5910DW MFC-J6920DW MFC-L2700DW MFC-9130CW MFC-9330CDW MFC-9340CDW MFC-J5620DW MFC-J6720DW MFC-L8600CDW MFC-L9550CDW MFC-L2720DW DCP-L2540DW DCP-L2520DW HL-3140CW HL-3170CDW HL-3180CDW HL-L8350CDW HL-L2380DW ADS-2500W ADS-1000W ADS-1500W.

Exploits (1)

exploitdb WORKING POC
by Patryk Bogdan · phpwebappshardware
https://www.exploit-db.com/exploits/41863

This exploit bypasses authentication on Brother devices by leveraging a flaw where a valid authorization cookie is issued even after a failed login. It can either silently retrieve the cookie or change the device password.

Classification
Working Poc 100%
Attack Type
Auth Bypass
Complexity
Trivial
Reliability
Reliable
Target: Brother MFC, DCP, HL & ADS Series devices (multiple models)
No auth needed
Prerequisites: Network access to the target device · HTTP(S) interface enabled on the device
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (2)

Core 2
Core References
Exploit, Third Party Advisory exploit x_refsource_exploit-db
https://www.exploit-db.com/exploits/41863/
Various Sources x_refsource_misc
https://cxsecurity.com/blad/WLB-2017040064

Scores

CVSS v3 9.8
EPSS 0.3358
EPSS Percentile 98.2%
Attack Vector NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-287
Status published
Products (4)
brother/ads_firmware
brother/dcp_firmware
brother/hl_firmware
brother/mfc_firmware
Published Apr 12, 2017
Tracked Since Feb 18, 2026