CVE-2021-44077

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 2021-12-01), 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 — 4 sources updated this weekExploited in the wild
9.8
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS: 94%CVSS: 9.8Exploit: NoneExposed: 0

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

Zoho ManageEngine ServiceDesk Plus before 11306, ServiceDesk Plus MSP before 10530, and SupportCenter Plus before 11014 are vulnerable to unauthenticated remote code execution. This is related to /RestAPI URLs in a servlet, and ImportTechnicians in the Struts configuration.

CVSS v3
9.8
EG Score
9.8(high)
EG Risk
99(Act)
EG Risk 99/100SSVC: Act

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%
Action: Fix now — active exploitation, automatable, high impact.
EPSS
99.8%
KEV
⚠ Exploited

Published

November 29, 2021

Last Modified

October 31, 2025

Advisory Details (5)

Auto-updated Jun 1, 2026
No patch confirmed yet.
generic
https://pitstop.manageengine.com/portal/en/community/topic/security-advisory-for-cve-2021-44077-unauthenticated-rce-vulnerability-in-supportcenter-plus-versions-11012-and-11013
generic
https://pitstop.manageengine.com/portal/en/community/topic/security-advisory-for-cve-2021-44077-unauthenticated-rce-vulnerability-in-servicedesk-plus-versions-up-to-11305-22-11-2021
generic
https://pitstop.manageengine.com/portal/en/community/topic/security-advisory-for-cve-2021-44077-unauthenticated-rce-vulnerability-in-servicedesk-plus-msp-versions-10527-till-10529
generic
https://pitstop.manageengine.com/portal/en/community/topic/security-advisory-authentication-bypass-vulnerability-in-servicedesk-plus-versions-11138-and-above
generic

Packet Storm

http://packetstormsecurity.com/files/165400/ManageEngine-ServiceDesk-Plus-Remote-Code-Execution.html

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 36× in last 7d / 184× 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 359 total refreshes for this CVE.

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

Publicly available exploits

(4 references)

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

  • GitHub PoCpizza-power/Golang-CVE-2021-44077-POC
    First seen Sep 29, 2022

    Golang Proof of Concept Exploit for CVE-2021-44077: PreAuth RCE in ManageEngine ServiceDesk Plus < 11306

    Open source ↗
  • GitHub PoChorizon3ai/CVE-2021-44077
    First seen Dec 8, 2021

    Proof of Concept Exploit for ManageEngine ServiceDesk Plus CVE-2021-44077

    Open source ↗
  • Metasploitexploit/windows/http/manageengine_servicedesk_plus_cve_2021_44077✓ verified
    First seen Sep 16, 2021

    ManageEngine ServiceDesk Plus CVE-2021-44077

    Open source ↗
  • Nucleihttp/cves/2021/CVE-2021-44077.yaml
    First seen Jan 1, 2021

    Zoho ManageEngine ServiceDesk Plus - Remote Code Execution

    Open source ↗

Related CVEs(same CWE)

Frequently asked(6)

What is CVE-2021-44077?
CVE-2021-44077 is a critical vulnerability published on November 29, 2021. Zoho ManageEngine ServiceDesk Plus before 11306, ServiceDesk Plus MSP before 10530, and SupportCenter Plus before 11014 are vulnerable to unauthenticated remote code execution. This is related to /RestAPI URLs in a servlet, and ImportTechnicians in the Struts configuration.
When was CVE-2021-44077 disclosed?
CVE-2021-44077 was first published in the National Vulnerability Database on November 29, 2021, with the most recent update on October 31, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2021-44077 actively exploited?
Yes. CISA added CVE-2021-44077 to the Known Exploited Vulnerabilities catalog on December 1, 2021, affecting Zoho ManageEngine ServiceDesk Plus (SDP) / SupportCenter Plus. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2021-44077?
CVE-2021-44077 has a CVSS v3 base score of 9.8 (NVD).
Which products are affected by CVE-2021-44077?
CVE-2021-44077 affects Zoho ManageEngine ServiceDesk Plus (SDP) / SupportCenter Plus. 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-2021-44077?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-44077, 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

Explore the affected products and dependency analysis for CVE-2021-44077

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