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CVE-2021-45998

31
FAUCET Score

CVE-2021-45998 is a critical command injection vulnerability affecting D-Link DIR-882 routers running firmware version DIR_882_FW1.30B06_Hotfix_02. Attackers can exploit this flaw by sending a specially crafted HNAP1 POST request, specifically manipulating the LocalIPAddress parameter. With a CVSS score of 9.8, this vulnerability allows for unauthenticated, remote execution of arbitrary commands, leading to complete compromise of the device. Despite its critical severity and high FAUCET 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
<= 1.30b06CPE matchmatch criteria
cpe:2.3:o:dlink:dir-882_firmware:*:*:*:*:*:*:*:*
1.30b06CPE matchmatch criteria
cpe:2.3:o:dlink:dir-882_firmware:1.30b06:hotfix_02_beta:*:*:*:*:*:*

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
3.72%
Probability of exploitation in next 30 days
EPSS Percentile
88.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0372 is in the 81st 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_4/4.md
Broken Link
supportannouncement.us.dlink.com / announcement/publication.aspx
Vendor Advisory
dlink.com / en/security-bulletin
Vendor Advisory