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CVE-2021-46457

32
FAUCET Score

CVE-2021-46457 is a critical command injection vulnerability affecting D-Link DIR-823-Pro v1.0.2 devices, specifically within the ChgSambaUserSettings function via the samba_name parameter. This flaw carries a CVSS score of 9.8 (Critical), indicating it can be exploited remotely without authentication to achieve full compromise (Confidentiality, Integrity, Availability). While there is no known active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered significant community discussion, suggesting potential interest from threat actors. Organizations using affected D-Link devices should prioritize patching to mitigate this severe risk.

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
3.82%
Probability of exploitation in next 30 days
EPSS Percentile
89.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0382 is in the 82nd 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_23/23.md
Broken Link
supportannouncement.us.dlink.com / announcement/publication.aspx
Vendor Advisory
dlink.com / en/security-bulletin
Vendor Advisory