CVE-2021-43636

CRITICALNVD 9.89.8—Trending — 3 sources updated this week

9.8

Two Buffer Overflow vulnerabilities exists in T10 V2_Firmware V4.1.8cu.5207_B20210320 in the http_request_parse function when processing host data in the HTTP request process.

CVSS v3: 9.8
EG Score: 9.8(medium)
EPSS: 60.8%
KEV: Not listed

Published

March 25, 2022

Last Modified

November 21, 2024

References (2)

cve@mitrehttps://note.youdao.com/s/918vCBNT
af854a3a-2127-422b-91ae-364da2661108https://note.youdao.com/s/918vCBNT

Weakness Classification(1)

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

CWE-120Buffer Copy without Checking Size (Classic Buffer Overflow)

Data Freshness Timeline

(refreshed 11× in last 7d / 11× 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.

2026-05-28 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 01:04 UTCEG score recompute
2026-05-26 01:04 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2021-43636?

CVE-2021-43636 is a critical vulnerability published on March 25, 2022. Two Buffer Overflow vulnerabilities exists in T10 V2Firmware V4.1.8cu.5207B20210320 in the httprequestparse function when processing host data in the HTTP request process.

When was CVE-2021-43636 disclosed?

CVE-2021-43636 was first published in the National Vulnerability Database on March 25, 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-2021-43636 actively exploited?

CVE-2021-43636 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 60.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-43636?

CVE-2021-43636 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2021-43636?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-43636, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2021-43636

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CVE-2021-43636

📅 Published

🔄 Last Modified

🔗 References (2)