CVE-2021-21315

CRITICALNVD 7.19.0▲
EchelonGraph scoreHIGH confidence

Score elevated to 9.0 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2022-01-18), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 7.1 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, nvd
Trending — 3 sources updated this weekExploited in the wild
9.0EG
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS PROB: 91%CVSS: 7.1Exploit: cisa kev · ssvc active · epss top5pct · epss high · public exploitExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

The System Information Library for Node.JS (npm package "systeminformation") is an open source collection of functions to retrieve detailed hardware, system and OS information. In systeminformation before version 5.3.1 there is a command injection vulnerability. Problem was fixed in version 5.3.1. As a workaround instead of upgrading, be sure to check or sanitize service parameters that are passed to si.inetLatency(), si.inetChecksite(), si.services(), si.processLoad() ... do only allow strings, reject any arrays. String sanitation works as expected.

CVSS v3
7.1
EG Score
9.0(high)
EG Risk
81(Attend)
EG Risk 81/100SSVC: Attend

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity90% × 45%
Exploitation100% × 40%
Automatability0% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
91%
EPSS %ILE
100%
KEV
⚠ Exploited

Published

February 16, 2021

Last Modified

October 24, 2025

Advisory Details (4)

Auto-updated Jun 11, 2026
Patch available. Sources: github_commit, github.
generic

NetApp Product Security

https://security.netapp.com/advisory/ntap-20210312-0007/
generic
https://lists.apache.org/thread.html/r8afea9a83ed568f2647cccc6d8d06126f9815715ddf9a4d479b26b05%40%3Cissues.cordova.apache.org%3E
github Patch Available

Command Injection Vulnerability · Advisory · sebhildebrandt/systeminformation · GitHub

https://github.com/sebhildebrandt/systeminformation/security/advisories/GHSA-2m8v-572m-ff2v
github_commit Patch Available

commit 07daa05fb06f (sebhildebrandt/systeminformation)

Patch available: sebhildebrandt/systeminformation v5.29.0 (contains commit 07daa05fb06f)

https://github.com/sebhildebrandt/systeminformation/commit/07daa05fb06f24f96297abaa30c2ace8bfd8b525

Affected Packages

(1 across 1 ecosystem)
npm(1)
PackageVulnerable rangeFixed inDependents
systeminformation—5.3.1—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 41× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 127 total refreshes for this CVE.

  1. 2026-09-18 23:13 UTCEG score recompute
  2. 2026-09-18 19:23 UTCEPSS rescore
  3. 2026-09-18 19:20 UTCCISA KEV update
  4. 2026-09-18 14:15 UTCCISA KEV update
  5. 2026-09-16 14:10 UTCCISA KEV update
  6. 2026-09-15 06:21 UTCEG score recompute
  7. 2026-09-15 03:06 UTCEPSS rescore
  8. 2026-09-14 19:24 UTCCISA KEV update
  9. 2026-09-11 18:49 UTCCISA KEV update
  10. 2026-09-10 19:28 UTCCISA KEV update
  11. 2026-09-10 13:25 UTCEG score recompute
  12. 2026-09-10 09:29 UTCEPSS rescore
  13. 2026-09-09 19:08 UTCCISA KEV update
  14. 2026-09-08 18:54 UTCCISA KEV update
  15. 2026-09-06 16:29 UTCEG score recompute
  16. 2026-09-06 13:44 UTCEPSS rescore
  17. 2026-09-06 13:44 UTCEPSS rescore
  18. 2026-09-05 16:15 UTCEG score recompute
  19. 2026-09-05 15:25 UTCEPSS rescore
  20. 2026-09-04 17:38 UTCCISA KEV update
  21. 2026-09-04 15:56 UTCEG score recompute
  22. 2026-09-04 13:57 UTCEPSS rescore
  23. 2026-09-02 17:33 UTCCISA KEV update
  24. 2026-09-01 15:04 UTCEG score recompute
  25. 2026-09-01 13:50 UTCEPSS rescore
Show 75 more
  1. 2026-09-01 06:55 UTCEG score recompute
  2. 2026-09-01 03:32 UTCEPSS rescore
  3. 2026-08-31 14:19 UTCCISA KEV update
  4. 2026-08-30 22:30 UTCEG score recompute
  5. 2026-08-30 19:14 UTCEPSS rescore
  6. 2026-08-28 21:59 UTCEG score recompute
  7. 2026-08-28 21:37 UTCEPSS rescore
  8. 2026-08-27 17:22 UTCCISA KEV update
  9. 2026-08-26 17:41 UTCCISA KEV update
  10. 2026-08-26 17:20 UTCEG score recompute
  11. 2026-08-26 14:42 UTCEPSS rescore
  12. 2026-08-24 18:52 UTCCISA KEV update
  13. 2026-08-24 16:46 UTCEG score recompute
  14. 2026-08-24 12:44 UTCEG score recompute
  15. 2026-08-21 16:49 UTCCISA KEV update
  16. 2026-08-20 17:06 UTCCISA KEV update
  17. 2026-08-19 17:33 UTCCISA KEV update
  18. 2026-08-18 16:58 UTCCISA KEV update
  19. 2026-08-17 13:56 UTCCISA KEV update
  20. 2026-08-16 15:02 UTCEG score recompute
  21. 2026-08-16 14:52 UTCEPSS rescore
  22. 2026-08-16 02:57 UTCEG score recompute
  23. 2026-08-16 02:11 UTCEPSS rescore
  24. 2026-08-15 02:45 UTCEG score recompute
  25. 2026-08-15 01:27 UTCEPSS rescore
  26. 2026-08-11 19:32 UTCCISA KEV update
  27. 2026-08-09 13:44 UTCEG score recompute
  28. 2026-08-09 13:43 UTCEPSS rescore
  29. 2026-08-08 17:35 UTCEG score recompute
  30. 2026-08-08 16:33 UTCEPSS rescore
  31. 2026-08-07 17:09 UTCCISA KEV update
  32. 2026-08-05 17:25 UTCCISA KEV update
  33. 2026-08-04 17:02 UTCCISA KEV update
  34. 2026-08-03 19:22 UTCCISA KEV update
  35. 2026-08-02 04:21 UTCEG score recompute
  36. 2026-08-02 02:24 UTCEPSS rescore
  37. 2026-08-01 08:09 UTCEG score recompute
  38. 2026-08-01 04:12 UTCEPSS rescore
  39. 2026-07-30 11:45 UTCEG score recompute
  40. 2026-07-29 19:27 UTCCISA KEV update
  41. 2026-07-28 19:16 UTCEG score recompute
  42. 2026-07-27 19:24 UTCCISA KEV update
  43. 2026-07-27 17:17 UTCCISA KEV update
  44. 2026-07-26 14:24 UTCEG score recompute
  45. 2026-07-26 02:14 UTCEG score recompute
  46. 2026-07-24 14:15 UTCEPSS rescore
  47. 2026-07-23 01:57 UTCEG score recompute
  48. 2026-07-22 22:43 UTCEG score recompute
  49. 2026-07-22 19:40 UTCCISA KEV update
  50. 2026-07-22 16:35 UTCEG score recompute
  51. 2026-07-22 14:05 UTCEPSS rescore
  52. 2026-07-21 16:16 UTCEG score recompute
  53. 2026-07-21 15:22 UTCEPSS rescore
  54. 2026-07-21 15:22 UTCEPSS rescore
  55. 2026-07-21 14:37 UTCCISA KEV update
  56. 2026-07-20 20:04 UTCEG score recompute
  57. 2026-07-20 17:04 UTCEPSS rescore
  58. 2026-07-17 07:20 UTCEG score recompute
  59. 2026-07-16 17:04 UTCCISA KEV update
  60. 2026-07-15 16:55 UTCEPSS rescore
  61. 2026-07-15 16:55 UTCEPSS rescore
  62. 2026-07-15 16:49 UTCCISA KEV update
  63. 2026-07-15 15:04 UTCCISA KEV update
  64. 2026-07-14 18:05 UTCCISA KEV update
  65. 2026-07-13 17:07 UTCCISA KEV update
  66. 2026-07-10 17:52 UTCCISA KEV update
  67. 2026-07-07 19:01 UTCCISA KEV update
  68. 2026-07-07 17:16 UTCCISA KEV update
  69. 2026-07-02 16:57 UTCEPSS rescore
  70. 2026-07-01 19:16 UTCCISA KEV update
  71. 2026-06-29 19:12 UTCCISA KEV update
  72. 2026-06-27 03:06 UTCEPSS rescore
  73. 2026-06-27 03:06 UTCEPSS rescore
  74. 2026-06-25 19:15 UTCCISA KEV update
  75. 2026-06-23 21:31 UTCEPSS rescore

Publicly available exploits

(3 references)

Working exploit code is in the public domain (2 GitHub PoCs). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCalikarimi999/CVE-2021-21315
    First seen Sep 7, 2021
    Open source ↗
  • GitHub PoCForbiddenProgrammer/CVE-2021-21315-PoC
    First seen Mar 1, 2021

    CVE 2021-21315 PoC

    Open source ↗
  • Nucleihttp/cves/2021/CVE-2021-21315.yaml
    First seen Jan 1, 2021

    Node.JS System Information Library <5.3.1 - Remote Command Injection

    Open source ↗

Related CVEs(same CWE)

Frequently asked(6)

What is CVE-2021-21315?
CVE-2021-21315 is a critical vulnerability published on February 16, 2021. The System Information Library for Node.JS (npm package "systeminformation") is an open source collection of functions to retrieve detailed hardware, system and OS information. In systeminformation before version 5.3.1 there is a command injection vulnerability. Problem was fixed in version 5.3.1.…
When was CVE-2021-21315 disclosed?
CVE-2021-21315 was first published in the National Vulnerability Database on February 16, 2021, with the most recent update on October 24, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2021-21315 actively exploited?
Yes. CISA added CVE-2021-21315 to the Known Exploited Vulnerabilities catalog on January 18, 2022, affecting Npm package System Information Library for Node.JS. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2021-21315?
CVE-2021-21315 has a CVSS v3 base score of 7.1 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.
Which products are affected by CVE-2021-21315?
CVE-2021-21315 affects Npm package System Information Library for Node.JS. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.
How do I remediate CVE-2021-21315?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-21315, 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

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