CVE-2018-12103
MEDIUMD-Link DIR-890L/885L/895L <1.21b02beta01/1.21b03beta01/1.21b04beta01 - CAPTCHA Bypass
Title source: llmDescription
An issue was discovered on D-Link DIR-890L with firmware 1.21B02beta01 and earlier, DIR-885L/R with firmware 1.21B03beta01 and earlier, and DIR-895L/R with firmware 1.21B04beta04 and earlier devices (all hardware revisions). Due to the predictability of the /docs/captcha_(number).jpeg URI, being local to the network, but unauthenticated to the administrator's panel, an attacker can disclose the CAPTCHAs used by the access point and can elect to load the CAPTCHA of their choosing, leading to unauthorized login attempts to the access point.
References (2)
Core 2
Core References
Vendor Advisory x_refsource_confirm
https://securityadvisories.dlink.com/announcement/publication.aspx?name=SAP10099
Mailing List, Third Party Advisory mailing-list
x_refsource_fulldisc
http://seclists.org/fulldisclosure/2018/Jul/13
Scores
CVSS v3
6.5
EPSS
0.0009
EPSS Percentile
25.0%
Attack Vector
ADJACENT_NETWORK
CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Details
CWE
CWE-863
Status
published
Products (3)
d-link/dir-885l\/r_firmware
< 1.21b03beta01
d-link/dir-895l\/r_firmware
< 1.21b04beta01
dlink/dir-890l_firmware
< 1.21b02beta01
Published
Jul 05, 2018
Tracked Since
Feb 18, 2026