CVE-2021-22883

Name: CVE-2021-22883
Creator: NVD / NIST
Published: 2021-03-03T18:15:14.893+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 77.39%

Last modified Jun 17, 2026

CVE-2021-22883 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Node.js before 10.24.0, 12.21.0, 14.16.0, and 15.10.0 is vulnerable to a denial of service attack when too many connection attempts with an 'unknownProtocol' are established. This leads to a leak of file descriptors. EPSS estimates a 77.39% chance of exploitation in the next 30 days.

Description

Node.js before 10.24.0, 12.21.0, 14.16.0, and 15.10.0 is vulnerable to a denial of service attack when too many connection attempts with an 'unknownProtocol' are established. This leads to a leak of file descriptors. If a file descriptor limit is configured on the system, then the server is unable to accept new connections and prevent the process also from opening, e.g. a file. If no file descriptor limit is configured, then this lead to an excessive memory usage and cause the system to run out of memory.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

77.39%

99.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Nodejs	Node.Js	>= 10.0.0, < 10.24.0
Nodejs	Node.Js	>= 12.0.0, < 12.21.0
Nodejs	Node.Js	>= 14.0.0, < 14.16.0
Nodejs	Node.Js	>= 15.0.0, < 15.10.0
Fedoraproject	Fedora	32
Fedoraproject	Fedora	33
Fedoraproject	Fedora	34
Netapp	E-Series Performance Analyzer	All versions
Oracle	Graalvm	19.3.5
Oracle	Graalvm	20.3.1.2
Oracle	Graalvm	21.0.0.2
Oracle	Jd Edwards Enterpriseone Tools	< 9.2.6.0
Oracle	Mysql Cluster	<= 8.0.25
Oracle	Nosql Database	< 20.3
Oracle	Peoplesoft Enterprise Peopletools	8.58
Oracle	Peoplesoft Enterprise Peopletools	8.59
Siemens	Sinec Infrastructure Network Services	< 1.0.1.1

References

https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdfPatch, Third Party Advisory
https://hackerone.com/reports/1043360Permissions Required, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/E4FRS5ZVK4ZQ7XIJQNGIKUXG2DJFHLO7/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/F45Y7TXSU33MTKB6AGL2Q5V5ZOCNPKOG/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HSYFUGKFUSZ27M5TEZ3FKILWTWFJTFAZ/
https://nodejs.org/en/blog/vulnerability/february-2021-security-releases/Patch, Release Notes, Vendor Advisory
https://security.netapp.com/advisory/ntap-20210416-0001/Third Party Advisory
https://www.oracle.com//security-alerts/cpujul2021.htmlPatch, Third Party Advisory
https://www.oracle.com/security-alerts/cpuApr2021.htmlPatch, Third Party Advisory
https://www.oracle.com/security-alerts/cpuoct2021.htmlPatch, Third Party Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdfPatch, Third Party Advisory
https://hackerone.com/reports/1043360Permissions Required, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/E4FRS5ZVK4ZQ7XIJQNGIKUXG2DJFHLO7/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/F45Y7TXSU33MTKB6AGL2Q5V5ZOCNPKOG/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HSYFUGKFUSZ27M5TEZ3FKILWTWFJTFAZ/
https://nodejs.org/en/blog/vulnerability/february-2021-security-releases/Patch, Release Notes, Vendor Advisory
https://security.netapp.com/advisory/ntap-20210416-0001/Third Party Advisory
https://www.oracle.com//security-alerts/cpujul2021.htmlPatch, Third Party Advisory
https://www.oracle.com/security-alerts/cpuApr2021.htmlPatch, Third Party Advisory
https://www.oracle.com/security-alerts/cpuoct2021.htmlPatch, Third Party Advisory

Timeline

Published: Mar 3, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-22883?

How severe is CVE-2021-22883?

CVE-2021-22883 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 77.39% probability of exploitation in the next 30 days.

How do I fix CVE-2021-22883?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-22883?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST