CVE-2021-21818 | BDVDB-2026-157129 Detail

D-Link

Description#

A hard-coded password vulnerability exists in the Zebra IP Routing Manager functionality of D-LINK DIR-3040 1.13B03. A specially crafted network request can lead to a denial of service. An attacker can send a sequence of requests to trigger this vulnerability.

Impact#

Per CVSS v3.0: confidentiality impact none, integrity impact none, availability impact high. Attack vector: network.

Weaknesses#

CWE-259 Use of Hard-coded Password

References#

https://talosintelligence.com/vulnerability_reports/TALOS-2021-1283

Exploit#

No public exploit known

History#

Version 12021-07-16Record published in the CVE List.
Version 22024-08-03Most recent update recorded in the CVE List.

Published

Published: 2021-07-16
Last modified: 2024-08-03

Vendor information

Vendor: Not stated
Product: D-Link

Score

7.5 High

EPSS

1.6%, Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 77.3.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Not classified

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
D-LINK DIR-3040 1.13B03
Fixed
Not stated

Scoring System

CVSS v4.0

Not available

CVSS v3.1

Not available

CVSS v3.0

7.5 High

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Metric breakdown
Attack Vector	Network
Attack Complexity	Low
Privileges Required	None
User Interaction	None
Scope	Unchanged
Confidentiality	None
Integrity	None
Availability	High

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).