CVE-2021-22940

Node.js before 16.6.1, 14.17.5, and 12.22.5 is vulnerable to a use after free attack where an attacker might be able to exploit the memory corruption, to change process behavior.

Published: 2021-08-16 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2021-22940 is rated Moderate Risk (63.5/100): CVSS High severity, with high exploitation likelihood (EPSS 13.86%, 96th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2021-22940

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-27 13.97% 13.86% -0.11%
2 2026-06-15 0.41% 13.97% +13.56%
3 2025-11-21 — 0.41% —

Full EPSS history (24 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2021-22940

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:N)
Service keeps running; no real outage angle.
 3.9 3.6 [email protected]
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:P/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:N)
No availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2021-22940

OS Trackers for CVE-2021-22940

vendor priority summary link
alpine — CVE-2021-22940: 1 source package rows (nodejs); 47 state rows across 7 repos (3.11-main, 3.12-main, 3.19-main, 3.20-main, 3.21-main, 3.22-main, edge-main); fixed 0, open 47. https://security.alpinelinux.org/vuln/CVE-2021-22940
debian unimportant CVE-2021-22940 unimportant priority: Debian including 1 source packages (nodejs), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2021-22940
gentoo low CVE-2021-22940: 2 GLSA(s) (202401-02, 202405-29), 2 atom(s) (net-dns/c-ares, net-libs/nodejs); latest impact low. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2021-22940
redhat high — https://access.redhat.com/security/cve/CVE-2021-22940
suse critical CVE-2021-22940 severity critical: SUSE including 59 source package names (12:nodejs12-12.22.5-4.19.1, 12:npm12-12.22.5-4.19.1, …), 228 product×package rows across 39 product lines (Container bci/node, Container bci/nodejs, … (39 product lines)): Fixed 191, Known Not Affected 37. https://www.suse.com/security/cve/CVE-2021-22940/
ubuntu low CVE-2021-22940 low priority: Ubuntu including 1 source packages (nodejs), 14 status rows across 14 suites (bionic, focal, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, trusty, upstream, xenial): not-affected 10, ignored 3, released 1. https://ubuntu.com/security/CVE-2021-22940

Affected software / configurations for CVE-2021-22940

Vendor Product Version Raw CPE
nodejs node.js >= 12.0.0, < 12.22.5 cpe:2.3:a:nodejs:node.js:*:*:*:*:lts:*:*:*
nodejs node.js >= 14.0.0, < 14.17.5 cpe:2.3:a:nodejs:node.js:*:*:*:*:lts:*:*:*
nodejs node.js >= 16.0.0, < 16.6.2 cpe:2.3:a:nodejs:node.js:*:*:*:*:-:*:*:*
oracle graalvm 20.3.3 cpe:2.3:a:oracle:graalvm:20.3.3:*:*:*:enterprise:*:*:*
oracle graalvm 21.2.0 cpe:2.3:a:oracle:graalvm:21.2.0:*:*:*:enterprise:*:*:*
oracle jd_edwards_enterpriseone_tools <= 9.2.6.1 cpe:2.3:a:oracle:jd_edwards_enterpriseone_tools:*:*:*:*:*:*:*:*
oracle peoplesoft_enterprise_peopletools 8.57 cpe:2.3:a:oracle:peoplesoft_enterprise_peopletools:8.57:*:*:*:*:*:*:*
oracle peoplesoft_enterprise_peopletools 8.58 cpe:2.3:a:oracle:peoplesoft_enterprise_peopletools:8.58:*:*:*:*:*:*:*
oracle peoplesoft_enterprise_peopletools 8.59 cpe:2.3:a:oracle:peoplesoft_enterprise_peopletools:8.59:*:*:*:*:*:*:*
netapp nextgen_api — cpe:2.3:a:netapp:nextgen_api:-:*:*:*:*:*:*:*
siemens sinec_infrastructure_network_services < 1.0.1.1 cpe:2.3:a:siemens:sinec_infrastructure_network_services:*:*:*:*:*:*:*:*
debian debian_linux 10.0 cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*

References for CVE-2021-22940

cvelogic Threat Intelligence