CVE-2021-28165

HIGHNVD 7.57.5—

7.5

In Eclipse Jetty 7.2.2 to 9.4.38, 10.0.0.alpha0 to 10.0.1, and 11.0.0.alpha0 to 11.0.1, CPU usage can reach 100% upon receiving a large invalid TLS frame.

CVSS v3: 7.5
EG Score: 7.5(medium)
EPSS: 94.3%
KEV: Not listed

Published

April 1, 2021

Last Modified

August 27, 2025

References (214)

Patch Availability(7)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
redhat	jetty	2022-09-09	redhat
redhat	patch	2021-11-23	redhat
redhat	patch	2021-09-30	redhat
redhat	jetty-server	2021-08-19	redhat
redhat	runc-0:1.0.0-95.rhaos4.8.gitcd80260.el7	2021-05-19	redhat
redhat	patch	2021-05-13	redhat
redhat	rh-eclipse-jetty-0:9.4.40-1.1.el7_9	2021-05-06	redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(1 across 1 ecosystem)

Maven(1)

Package	Vulnerable range	Fixed in	Dependents
org.eclipse.jetty:jetty-server	11.0.0, 11.0.1	11.0.2	—

Weakness Classification(3)

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

All Vendor Advisories

(9)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 7× in last 7d / 7× 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.

2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-26 18:55 UTCEG score recompute
2026-05-26 18:55 UTCVendor advisory
2026-05-26 13:42 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch

Frequently asked(5)

What is CVE-2021-28165?

CVE-2021-28165 is a high vulnerability published on April 1, 2021. In Eclipse Jetty 7.2.2 to 9.4.38, 10.0.0.alpha0 to 10.0.1, and 11.0.0.alpha0 to 11.0.1, CPU usage can reach 100% upon receiving a large invalid TLS frame.

When was CVE-2021-28165 disclosed?

CVE-2021-28165 was first published in the National Vulnerability Database on April 1, 2021, with the most recent update on August 27, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2021-28165 actively exploited?

CVE-2021-28165 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 94.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-28165?

CVE-2021-28165 has a CVSS v3 base score of 7.5 (NVD).

How do I remediate CVE-2021-28165?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-28165, 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-2021-28165

Explore →

Is Your Infrastructure Affected by CVE-2021-28165?

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CVE-2021-28165

Published

Last Modified

References (214)

Patch Availability(7)

Affected Packages

Weakness Classification(3)

All Vendor Advisories

Data Freshness Timeline

Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2021-28165?

Same vendor

Same CWE

CVE-2021-28165

📅 Published

🔄 Last Modified

🔗 References (214)

Patch Availability(7)

Affected Packages

Weakness Classification(3)

All Vendor Advisories

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2021-28165?

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Last Modified

References (214)

Frequently asked(5)

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