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CVE-2021-44881

32
FAUCET Score

CVE-2021-44881 is a critical command injection vulnerability affecting D-Link DIR-882 routers running firmware version 1.30B06 Hotfix 02. Attackers can exploit this flaw by sending a specially crafted HNAP1 POST request to execute arbitrary commands on the device. With a CVSS score of 9.8, this vulnerability is easily exploitable over the network without authentication, leading to complete compromise of confidentiality, integrity, and availability. While no public exploits or active exploitation have been observed, and community discussion is minimal, the high FAUCET Risk Score of 88/100 indicates its significant potential impact.

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
4.63%
Probability of exploitation in next 30 days
EPSS Percentile
90.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0464 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_3/3.md
Broken Link
supportannouncement.us.dlink.com / announcement/publication.aspx
Vendor Advisory
dlink.com / en/security-bulletin
Vendor Advisory