CVE-2021-44207

CRITICALNVD 8.19.0▲
EchelonGraph scoreHIGH confidence

Score elevated to 9.0 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2024-12-23), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 8.1 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
9.0EG
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS PROB: 18%CVSS: 8.1Exploit: cisa kev · ssvc active · epss top5pctExposed: 0

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

Acclaim USAHERDS through 7.4.0.1 uses hard-coded credentials.

CVSS v3
8.1
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
18%
EPSS %ILE
97%
KEV
⚠ Exploited

Published

December 21, 2021

Last Modified

November 10, 2025

Advisory Details (3)

Auto-updated Jun 3, 2026
⚠️ Active exploitation confirmed. Patch available. Sources: cisa.
cisa Patch Available🔴 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-2021-44207
generic

Acclaim Systems Home

https://www.acclaimsystems.com
generic

Vulnerability-Disclosures/MNDT-2021-0012/MNDT-2021-0012.md at master · mandiant/Vulnerability-Disclosures · GitHub

https://github.com/mandiant/Vulnerability-Disclosures/blob/master/MNDT-2021-0012/MNDT-2021-0012.md

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 61× in last 7d / 263× 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 947 total refreshes for this CVE.

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

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Frequently asked(6)

What is CVE-2021-44207?
CVE-2021-44207 is a critical vulnerability published on December 21, 2021. Acclaim USAHERDS through 7.4.0.1 uses hard-coded credentials.
When was CVE-2021-44207 disclosed?
CVE-2021-44207 was first published in the National Vulnerability Database on December 21, 2021, with the most recent update on November 10, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2021-44207 actively exploited?
Yes. CISA added CVE-2021-44207 to the Known Exploited Vulnerabilities catalog on December 23, 2024, affecting Acclaim Systems USAHERDS. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2021-44207?
CVE-2021-44207 has a CVSS v3 base score of 8.1 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.
Which products are affected by CVE-2021-44207?
CVE-2021-44207 affects Acclaim Systems USAHERDS. 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-2021-44207?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-44207, 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.

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