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CVE-2021-46454

31
FAUCET Score

CVE-2021-46454 is a critical command injection vulnerability in the D-Link DIR-823-Pro router, specifically affecting firmware version 1.0.2. Attackers can exploit this by injecting arbitrary commands through the ApCliKeyStr parameter within the SetWLanApcliSettings function. With a CVSS score of 9.8, this vulnerability poses a severe risk, allowing unauthenticated remote attackers to achieve complete compromise of the device, including confidentiality, integrity, and availability. Despite its high severity and critical risk score, there is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.0.2CPE matchmatch criteria
cpe:2.3:o:dlink:dir-823_pro_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
4.52%
Probability of exploitation in next 30 days
EPSS Percentile
90.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0452 is in the 84th percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

github.com / pjqwudi/my_vuln/blob/main/D-link/vuln_24/24.md
ExploitThird Party Advisory
supportannouncement.us.dlink.com / announcement/publication.aspx
Vendor Advisory
dlink.com / en/security-bulletin
Vendor Advisory