CVE-2018-12103

Name: CVE-2018-12103
Creator: NVD / NIST
Published: 2018-07-05T20:29:00.433+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 0.45%

Last modified Jun 17, 2026

CVE-2018-12103 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 0.45% chance of exploitation in the next 30 days.

Description

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.

Metrics

EPSS Probability

0.45%

36.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-863

Affected Software

Vendor	Product	Versions
Dlink	Dir-890l Firmware	<= 1.21b02beta01
D-Link	Dir-885l\/R Firmware	<= 1.21b03beta01
D-Link	Dir-895l\/R Firmware	<= 1.21b04beta01

References

http://seclists.org/fulldisclosure/2018/Jul/13Mailing List, Third Party Advisory
https://securityadvisories.dlink.com/announcement/publication.aspx?name=SAP10099Vendor Advisory
http://seclists.org/fulldisclosure/2018/Jul/13Mailing List, Third Party Advisory
https://securityadvisories.dlink.com/announcement/publication.aspx?name=SAP10099Vendor Advisory

Timeline

Published: Jul 5, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-12103?

How severe is CVE-2018-12103?

Severity scoring for CVE-2018-12103 is pending analysis. The EPSS model estimates a 0.45% probability of exploitation in the next 30 days.

How do I fix CVE-2018-12103?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-12103?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST