CVE-2021-44529

CRITICALNVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score elevated to 9.8 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2024-03-25), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 9.8 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, ghsa, nvd
Trending — 3 sources updated this weekExploited in the wild
9.8EG
EchelonGraph verdictMitigate nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS PROB: 99%CVSS: 9.8Exploit: cisa kev · ssvc active · kev ransomware · Metasploit · epss top5pct · epss high · public exploitExposed services: Not assessed

A fix is referenced (a reference tagged "Patch", often a source commit), but no release containing it is confirmed — find the release that contains it; until it is applied, mitigate (WAF / firewall / segmentation).

A code injection vulnerability in the Ivanti EPM Cloud Services Appliance (CSA) allows an unauthenticated user to execute arbitrary code with limited permissions (nobody).

CVSS v3
9.8
EG Score
9.8CRITICALhigh confidence
EG Risk
99
EG Risk 99/100CISA SSVC

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
Severity98% × 45%
Exploitation100% × 40%
Automatability100% × 15%
CISA SSVC: Attend at low mission impact; Act at medium or high.
Action: A fix is referenced, but no release containing it is confirmed. Check the referenced fix and the vendor's advisory for a release that contains it and apply that sooner than your standard update timelines at low mission impact and as soon as possible at medium or high; until then, restrict network exposure of the affected system or apply the vendor's mitigation.
EPSS PROB
99%
EPSS %ILE
99th
KEV
⚠ Exploited

CISA SSVCAttend at low mission impact; Act at medium or high.

A fix is referenced, but no release containing it is confirmed. Check the referenced fix and the vendor's advisory for a release that contains it and apply that sooner than your standard update timelines at low mission impact and as soon as possible at medium or high; until then, restrict network exposure of the affected system or apply the vendor's mitigation.

Exploitation active (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

December 8, 2021

Last Modified

August 4, 2026

Advisory Details (3)

Auto-updated Oct 6, 2026
⚠️ Active exploitation confirmed. Fix referenced — no release confirmed yet. Sources: cisa.
cisa🔴 Active Exploitation

Known Exploited Vulnerabilities Catalog | CISA

Known Exploited Vulnerabilities Catalog | CISA. Listed in CISA Known Exploited Vulnerabilities catalog.

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-44529
generic

Packet Storm

http://packetstormsecurity.com/files/170590/Ivanti-Cloud-Services-Appliance-CSA-Command-Injection.html
generic

Packet Storm

http://packetstormsecurity.com/files/166383/Ivanti-Endpoint-Manager-CSA-4.5-4.6-Remote-Code-Execution.html

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 42× in last 7d / 190× 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 809 total refreshes for this CVE.

  1. 2026-10-06 07:48 UTCGHSA enrichment
  2. 2026-10-06 03:32 UTCGHSA enrichment
  3. 2026-10-05 23:15 UTCGHSA enrichment
  4. 2026-10-05 18:59 UTCGHSA enrichment
  5. 2026-10-05 14:43 UTCGHSA enrichment
  6. 2026-10-05 10:27 UTCGHSA enrichment
  7. 2026-10-05 06:12 UTCGHSA enrichment
  8. 2026-10-05 01:55 UTCGHSA enrichment
  9. 2026-10-04 21:39 UTCGHSA enrichment
  10. 2026-10-04 17:23 UTCGHSA enrichment
  11. 2026-10-04 13:06 UTCGHSA enrichment
  12. 2026-10-04 08:48 UTCGHSA enrichment
  13. 2026-10-04 04:32 UTCGHSA enrichment
  14. 2026-10-04 00:16 UTCGHSA enrichment
  15. 2026-10-03 20:00 UTCGHSA enrichment
  16. 2026-10-03 15:44 UTCEG score recompute
  17. 2026-10-03 15:44 UTCGHSA enrichment
  18. 2026-10-03 14:22 UTCEPSS rescore
  19. 2026-10-03 11:25 UTCGHSA enrichment
  20. 2026-10-03 07:05 UTCGHSA enrichment
  21. 2026-10-03 02:49 UTCGHSA enrichment
  22. 2026-10-02 22:32 UTCGHSA enrichment
  23. 2026-10-02 18:16 UTCGHSA enrichment
  24. 2026-10-02 14:00 UTCGHSA enrichment
  25. 2026-10-02 09:44 UTCGHSA enrichment
Show 75 more
  1. 2026-10-02 05:27 UTCGHSA enrichment
  2. 2026-10-02 01:11 UTCGHSA enrichment
  3. 2026-10-01 20:55 UTCGHSA enrichment
  4. 2026-10-01 16:38 UTCGHSA enrichment
  5. 2026-10-01 12:21 UTCGHSA enrichment
  6. 2026-10-01 08:03 UTCGHSA enrichment
  7. 2026-10-01 03:47 UTCGHSA enrichment
  8. 2026-09-30 23:31 UTCGHSA enrichment
  9. 2026-09-30 19:12 UTCGHSA enrichment
  10. 2026-09-30 14:55 UTCGHSA enrichment
  11. 2026-09-30 10:39 UTCGHSA enrichment
  12. 2026-09-30 06:21 UTCGHSA enrichment
  13. 2026-09-30 02:04 UTCGHSA enrichment
  14. 2026-09-29 21:48 UTCGHSA enrichment
  15. 2026-09-29 17:31 UTCGHSA enrichment
  16. 2026-09-29 13:13 UTCGHSA enrichment
  17. 2026-09-29 08:54 UTCGHSA enrichment
  18. 2026-09-29 04:38 UTCGHSA enrichment
  19. 2026-09-29 00:22 UTCEG score recompute
  20. 2026-09-29 00:22 UTCGHSA enrichment
  21. 2026-09-28 20:05 UTCGHSA enrichment
  22. 2026-09-28 15:48 UTCGHSA enrichment
  23. 2026-09-28 11:31 UTCGHSA enrichment
  24. 2026-09-28 07:15 UTCGHSA enrichment
  25. 2026-09-28 02:59 UTCGHSA enrichment
  26. 2026-09-27 22:43 UTCGHSA enrichment
  27. 2026-09-27 21:51 UTCCISA KEV update
  28. 2026-09-27 18:26 UTCGHSA enrichment
  29. 2026-09-27 14:09 UTCGHSA enrichment
  30. 2026-09-27 09:53 UTCGHSA enrichment
  31. 2026-09-27 05:37 UTCGHSA enrichment
  32. 2026-09-27 01:20 UTCGHSA enrichment
  33. 2026-09-26 21:04 UTCGHSA enrichment
  34. 2026-09-26 16:46 UTCGHSA enrichment
  35. 2026-09-26 12:29 UTCGHSA enrichment
  36. 2026-09-26 08:13 UTCGHSA enrichment
  37. 2026-09-26 03:53 UTCGHSA enrichment
  38. 2026-09-25 23:35 UTCGHSA enrichment
  39. 2026-09-25 19:35 UTCCISA KEV update
  40. 2026-09-25 19:18 UTCGHSA enrichment
  41. 2026-09-25 15:01 UTCGHSA enrichment
  42. 2026-09-25 14:55 UTCCISA KEV update
  43. 2026-09-25 10:43 UTCGHSA enrichment
  44. 2026-09-25 06:17 UTCGHSA enrichment
  45. 2026-09-25 02:01 UTCGHSA enrichment
  46. 2026-09-24 21:44 UTCGHSA enrichment
  47. 2026-09-24 19:31 UTCCISA KEV update
  48. 2026-09-24 17:28 UTCGHSA enrichment
  49. 2026-09-24 13:12 UTCGHSA enrichment
  50. 2026-09-24 08:56 UTCGHSA enrichment
  51. 2026-09-24 04:40 UTCGHSA enrichment
  52. 2026-09-24 00:23 UTCGHSA enrichment
  53. 2026-09-23 20:07 UTCGHSA enrichment
  54. 2026-09-23 15:51 UTCGHSA enrichment
  55. 2026-09-23 11:35 UTCGHSA enrichment
  56. 2026-09-23 07:19 UTCGHSA enrichment
  57. 2026-09-23 03:03 UTCGHSA enrichment
  58. 2026-09-22 22:47 UTCGHSA enrichment
  59. 2026-09-22 19:36 UTCCISA KEV update
  60. 2026-09-22 18:31 UTCEG score recompute
  61. 2026-09-22 18:30 UTCGHSA enrichment
  62. 2026-09-22 14:44 UTCEPSS rescore
  63. 2026-09-22 14:14 UTCGHSA enrichment
  64. 2026-09-22 09:58 UTCGHSA enrichment
  65. 2026-09-22 05:42 UTCGHSA enrichment
  66. 2026-09-22 01:26 UTCGHSA enrichment
  67. 2026-09-21 21:10 UTCEG score recompute
  68. 2026-09-21 21:10 UTCGHSA enrichment
  69. 2026-09-21 20:28 UTCEPSS rescore
  70. 2026-09-21 19:09 UTCCISA KEV update
  71. 2026-09-21 16:54 UTCGHSA enrichment
  72. 2026-09-21 12:38 UTCGHSA enrichment
  73. 2026-09-21 08:22 UTCGHSA enrichment
  74. 2026-09-21 04:05 UTCGHSA enrichment
  75. 2026-09-20 23:49 UTCGHSA enrichment

Publicly available exploits

(5 references)

Working exploit code is in the public domain (1 Metasploit module) (2 GitHub PoCs) (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Metasploitexploit/linux/http/ivanti_csa_unauth_rce_cve_2021_44529✓ verified
    First seen Dec 2, 2021

    Ivanti Cloud Services Appliance (CSA) Command Injection

    Open source ↗
  • GitHub PoCjax7sec/CVE-2021-44529
    First seen Apr 16, 2022

    CVE-2021-44529 Ivanti EPM 云服务设备 (CSA) 中的代码注入漏洞允许未经身份验证的用户以有限的权限（nobody）执行任意代码。

    Open source ↗
  • GitHub PoCjkana/CVE-2021-44529
    First seen Mar 24, 2022

    CVE-2021-44529 PoC

    Open source ↗
  • Exploit-DBEDB-50833
    First seen Mar 22, 2022

    Ivanti Endpoint Manager 4.6 - Remote Code Execution (RCE)

    Open source ↗
  • Nucleihttp/cves/2021/CVE-2021-44529.yaml
    First seen Jan 1, 2021

    Ivanti EPM Cloud Services Appliance Code Injection

    Open source ↗

Related CVEs(same CWE)

Frequently asked(6)

What is CVE-2021-44529?
CVE-2021-44529 is a critical vulnerability published on December 8, 2021. A code injection vulnerability in the Ivanti EPM Cloud Services Appliance (CSA) allows an unauthenticated user to execute arbitrary code with limited permissions (nobody).
When was CVE-2021-44529 disclosed?
CVE-2021-44529 was first published on December 8, 2021, with the most recent update on August 4, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2021-44529 actively exploited?
Yes. CISA added CVE-2021-44529 to the Known Exploited Vulnerabilities catalog on March 25, 2024, affecting Ivanti Endpoint Manager Cloud Service Appliance (EPM CSA). KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate attention. A fix is referenced, but no release containing it is confirmed. Check the referenced fix and the vendor's advisory for a release that contains it and apply that; until then, restrict network exposure of the affected system or apply the vendor's mitigation.
What is the CVSS score of CVE-2021-44529?
CVE-2021-44529 has a CVSS v3 base score of 9.8 (NVD).
Which products are affected by CVE-2021-44529?
CVE-2021-44529 affects Ivanti Endpoint Manager Cloud Service Appliance (EPM CSA).
How do I remediate CVE-2021-44529?
A fix for CVE-2021-44529 is referenced (a reference tagged "Patch", often a source commit), but EchelonGraph has no release containing it on record. Check that reference and the vendor's advisory for a release that contains the fix and update to it; until then, restrict network exposure of the affected system or apply the vendor's mitigation.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2021-44529

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