CVE-2021-44881

CRITICALNVD 9.89.8—

9.8

D-Link device DIR_882 DIR_882_FW1.30B06_Hotfix_02 was discovered to contain a command injection vulnerability in the twsystem function. This vulnerability allows attackers to execute arbitrary commands via a crafted HNAP1 POST request.

CVSS v3: 9.8
EG Score: 9.8(medium)
EPSS: 92.7%
KEV: Not listed

Published

February 4, 2022

Last Modified

November 21, 2024

References (6)

cve@mitrehttps://github.com/pjqwudi/my_vuln/blob/main/D-link/vuln_3/3.md
cve@mitrehttps://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10287
cve@mitrehttps://www.dlink.com/en/security-bulletin/
af854a3a-2127-422b-91ae-364da2661108https://github.com/pjqwudi/my_vuln/blob/main/D-link/vuln_3/3.md
af854a3a-2127-422b-91ae-364da2661108https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10287
af854a3a-2127-422b-91ae-364da2661108https://www.dlink.com/en/security-bulletin/

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 9× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-04 13:10 UTCepss_batch
2026-06-04 13:10 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
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2026-05-29 13:42 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 03:46 UTCEG score recompute
2026-05-26 03:46 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2021-44881?

CVE-2021-44881 is a critical vulnerability published on February 4, 2022. D-Link device DIR882 DIR882FW1.30B06Hotfix_02 was discovered to contain a command injection vulnerability in the twsystem function. This vulnerability allows attackers to execute arbitrary commands via a crafted HNAP1 POST request.

When was CVE-2021-44881 disclosed?

CVE-2021-44881 was first published in the National Vulnerability Database on February 4, 2022, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2021-44881 actively exploited?

CVE-2021-44881 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 92.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-44881?

CVE-2021-44881 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2021-44881?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-44881, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2021-44881

📅 Published

🔄 Last Modified

🔗 References (6)

Weakness Classification(2)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2021-44881?

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Published

Last Modified

References (6)

Frequently asked(5)

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