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Vulnerability details: VCID-v9pq-n6cq-8uef
Vulnerability ID VCID-v9pq-n6cq-8uef
Aliases CVE-2021-22883
Summary 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.
Status Published
Exploitability 2.0
Weighted Severity 7.0
Risk 10.0
Affected and Fixed Packages Package Details
Weaknesses (2)
CWE-772 Missing Release of Resource after Effective Lifetime
CWE-400 Uncontrolled Resource Consumption
System Score Found at
cvssv3 7.5 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-22883.json
epss 0.86553 https://api.first.org/data/v1/epss?cve=CVE-2021-22883
epss 0.86553 https://api.first.org/data/v1/epss?cve=CVE-2021-22883
epss 0.87361 https://api.first.org/data/v1/epss?cve=CVE-2021-22883
epss 0.87361 https://api.first.org/data/v1/epss?cve=CVE-2021-22883
epss 0.87361 https://api.first.org/data/v1/epss?cve=CVE-2021-22883
epss 0.87361 https://api.first.org/data/v1/epss?cve=CVE-2021-22883
epss 0.87361 https://api.first.org/data/v1/epss?cve=CVE-2021-22883
epss 0.87361 https://api.first.org/data/v1/epss?cve=CVE-2021-22883
epss 0.87361 https://api.first.org/data/v1/epss?cve=CVE-2021-22883
epss 0.8822 https://api.first.org/data/v1/epss?cve=CVE-2021-22883
epss 0.8822 https://api.first.org/data/v1/epss?cve=CVE-2021-22883
epss 0.8822 https://api.first.org/data/v1/epss?cve=CVE-2021-22883
epss 0.91316 https://api.first.org/data/v1/epss?cve=CVE-2021-22883
epss 0.91316 https://api.first.org/data/v1/epss?cve=CVE-2021-22883
cvssv3.1 7.5 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv2 7.8 https://nvd.nist.gov/vuln/detail/CVE-2021-22883
cvssv3.1 7.5 https://nvd.nist.gov/vuln/detail/CVE-2021-22883
archlinux Medium https://security.archlinux.org/AVG-1604
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-22883.json
https://api.first.org/data/v1/epss?cve=CVE-2021-22883
https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-22883
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-22884
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://hackerone.com/reports/1043360
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/
https://security.netapp.com/advisory/ntap-20210416-0001/
https://www.oracle.com/security-alerts/cpuApr2021.html
https://www.oracle.com//security-alerts/cpujul2021.html
https://www.oracle.com/security-alerts/cpuoct2021.html
1932014 https://bugzilla.redhat.com/show_bug.cgi?id=1932014
AVG-1604 https://security.archlinux.org/AVG-1604
cpe:2.3:a:netapp:e-series_performance_analyzer:-:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:netapp:e-series_performance_analyzer:-:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:*:*:*:*:-:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:nodejs:node.js:*:*:*:*:-:*:*:*
cpe:2.3:a:nodejs:node.js:*:*:*:*:lts:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:nodejs:node.js:*:*:*:*:lts:*:*:*
cpe:2.3:a:oracle:graalvm:19.3.5:*:*:*:enterprise:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:oracle:graalvm:19.3.5:*:*:*:enterprise:*:*:*
cpe:2.3:a:oracle:graalvm:20.3.1.2:*:*:*:enterprise:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:oracle:graalvm:20.3.1.2:*:*:*:enterprise:*:*:*
cpe:2.3:a:oracle:graalvm:21.0.0.2:*:*:*:enterprise:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:oracle:graalvm:21.0.0.2:*:*:*:enterprise:*:*:*
cpe:2.3:a:oracle:jd_edwards_enterpriseone_tools:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:oracle:jd_edwards_enterpriseone_tools:*:*:*:*:*:*:*:*
cpe:2.3:a:oracle:mysql_cluster:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:oracle:mysql_cluster:*:*:*:*:*:*:*:*
cpe:2.3:a:oracle:nosql_database:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:oracle:nosql_database:*:*:*:*:*:*:*:*
cpe:2.3:a:oracle:peoplesoft_enterprise_peopletools:8.58:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:oracle:peoplesoft_enterprise_peopletools:8.58:*:*:*:*:*:*:*
cpe:2.3:a:oracle:peoplesoft_enterprise_peopletools:8.59:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:oracle:peoplesoft_enterprise_peopletools:8.59:*:*:*:*:*:*:*
cpe:2.3:a:siemens:sinec_infrastructure_network_services:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:siemens:sinec_infrastructure_network_services:*:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
CVE-2021-22883 https://nvd.nist.gov/vuln/detail/CVE-2021-22883
RHSA-2021:0734 https://access.redhat.com/errata/RHSA-2021:0734
RHSA-2021:0735 https://access.redhat.com/errata/RHSA-2021:0735
RHSA-2021:0738 https://access.redhat.com/errata/RHSA-2021:0738
RHSA-2021:0739 https://access.redhat.com/errata/RHSA-2021:0739
RHSA-2021:0740 https://access.redhat.com/errata/RHSA-2021:0740
RHSA-2021:0741 https://access.redhat.com/errata/RHSA-2021:0741
RHSA-2021:0744 https://access.redhat.com/errata/RHSA-2021:0744
RHSA-2021:0827 https://access.redhat.com/errata/RHSA-2021:0827
RHSA-2021:0830 https://access.redhat.com/errata/RHSA-2021:0830
RHSA-2021:0831 https://access.redhat.com/errata/RHSA-2021:0831
USN-6418-1 https://usn.ubuntu.com/6418-1/
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-22883.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C Found at https://nvd.nist.gov/vuln/detail/CVE-2021-22883
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2021-22883
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.99387
EPSS Score 0.86553
Published At Aug. 2, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:30:31.329657+00:00 Alpine Linux Importer Import https://secdb.alpinelinux.org/v3.15/community.json 37.0.0