CVE-2021-41442

HIGHNVD 7.57.5—

7.5

An HTTP smuggling attack in the web application of D-Link DIR-X1860 before v1.10WWB09_Beta allows a remote unauthenticated attacker to DoS the web application via sending a specific HTTP packet.

CVSS v3: 7.5
EG Score: 7.5(medium)
EPSS: 85.1%
KEV: Not listed

Published

February 9, 2022

Last Modified

November 21, 2024

References (8)

cve@mitrehttp://d-link.com
cve@mitrehttp://dir-x1860.com
cve@mitrehttps://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10283
cve@mitrehttps://www.dlink.com/en/security-bulletin/
af854a3a-2127-422b-91ae-364da2661108http://d-link.com
af854a3a-2127-422b-91ae-364da2661108http://dir-x1860.com
af854a3a-2127-422b-91ae-364da2661108https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10283
af854a3a-2127-422b-91ae-364da2661108https://www.dlink.com/en/security-bulletin/

Weakness Classification(1)

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

CWE-444Inconsistent Interpretation of HTTP Requests (HTTP Request Smuggling)

Data Freshness Timeline

(refreshed 11× 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.

2026-06-02 20:11 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
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 03:26 UTCEG score recompute
2026-05-26 03:26 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2021-41442?

CVE-2021-41442 is a high vulnerability published on February 9, 2022. An HTTP smuggling attack in the web application of D-Link DIR-X1860 before v1.10WWB09_Beta allows a remote unauthenticated attacker to DoS the web application via sending a specific HTTP packet.

When was CVE-2021-41442 disclosed?

CVE-2021-41442 was first published in the National Vulnerability Database on February 9, 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-2021-41442 actively exploited?

CVE-2021-41442 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 85.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-41442?

CVE-2021-41442 has a CVSS v3 base score of 7.5 (NVD).

How do I remediate CVE-2021-41442?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-41442, 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-2021-41442

📅 Published

🔄 Last Modified

🔗 References (8)