PT-2026-5404 · D Link · Dir-823

942384053 · Published 2026-01-16 · Updated 2026-02-20 · CVE-2026-1685

Positive Technologies (AI Summary)

CVSS v3.1

5.9

Medium

Base vector

AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Name of the Vulnerable Software and Affected Versions D-Link DIR-823X version 250416

Description A flaw exists in the Login component of the D-Link DIR-823X, specifically within the sub 40AC74 function. This issue results in insufficient restriction of excessive authentication attempts, potentially allowing for unauthorized access. The exploit is publicly available and is considered difficult to exploit due to its high complexity.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Improper Restriction of Excessive Authentication Attempts

Weakness Enumeration

CWE-307

CWE-799

Related Identifiers

BDU:2026-01122

CVE-2026-1685

Affected Products

Dir-823

References · 12

• 🔥 https://github.com/master-abc/cve/issues/17 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-1685 · Security Note
• https://osv.dev/vulnerability/CVE-2026-1685 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-01122 · Security Note
• https://vuldb.com/?ctiid.343479 · Note
• https://t.me/cveNotify/152591 · Telegram Post
• https://vuldb.com/?id.343479 · Note
• https://vuldb.com/?submit.740886 · Note
• https://dlink.com · Note
• https://twitter.com/VulmonFeeds/status/2017259983033799068 · Twitter Post
• https://twitter.com/CVEnew/status/2017253393031647690 · Twitter Post
• https://t.me/CVEtracker/43294 · Telegram Post