Cyber Resilience

CVE-2021-28165

HighPublic PoCDDoS

Published: 01 April 2021

Published
01 April 2021
Modified
27 August 2025
KEV Added
Patch
CVSS Score v3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS Score 0.1358 94.4th percentile
Risk Priority 23 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-28165 is a high-severity Uncontrolled Resource Consumption (CWE-400) vulnerability in Eclipse Jetty. Its CVSS base score is 7.5 (High).

Operationally, ranked in the top 5.6% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

EU & UK References

Vulnerability details

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.

CWE(s)

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

eclipse
jetty
7.2.2 — 9.4.39 · 10.0.0 — 10.0.2 · 11.0.0 — 11.0.2
oracle
autovue for agile product lifecycle management
21.0.2
oracle
communications cloud native core policy
1.14.0
oracle
communications element manager
8.2.2
oracle
communications services gatekeeper
7.0
oracle
communications session report manager
8.0.0.0 — 8.2.4.0
oracle
communications session route manager
8.0.0.0 — 8.2.4.0
oracle
rest data services
≤ 21.3
oracle
siebel core - automation
≤ 21.9
jenkins
jenkins
≤ 2.277.3 · ≤ 2.286
+11 more product configuration(s) — see NVD for full list

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

addresses: CWE-400 CWE-755

Updated contingency plans include current procedures to detect, contain, and recover from resource exhaustion, limiting an attacker's ability to sustain impact from uncontrolled consumption.

addresses: CWE-400 CWE-755

MTTF monitoring plus ready substitutes directly mitigate sustained resource exhaustion by allowing component swap before or at failure.

addresses: CWE-400

Limiting concurrent sessions directly prevents uncontrolled resource consumption by capping the number of active sessions per user or account.

addresses: CWE-755

Provides defined handling (alert and additional actions) for the exceptional condition of audit logging failure.

addresses: CWE-400

Analysis identifies uncontrolled resource consumption indicative of denial-of-service or abuse attempts.

addresses: CWE-755

Supplies a concrete handling action (safe mode) for exceptional conditions, mitigating risks from improper or absent handling that could allow continued attacks.

addresses: CWE-755

By preparing users for contingency scenarios, the control promotes proper handling of exceptional conditions instead of default or unsafe behaviors.

addresses: CWE-400

Contingency plan testing includes resource exhaustion scenarios to verify recovery, making it harder for attackers to sustain exploits that cause uncontrolled consumption.

References