CVE-2026-21751

HIGHPre-NVD 7.47.4—
EchelonGraph scoreHIGH confidence

Score 7.4 from GitHub Security Advisory (severity: HIGH) published 2026-08-24. a secondary CVSS source baseline 7.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
7.4EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.4Exploit: None knownExposed: 0

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

HCL Hive is affected by a cryptographic primitive with a risky implementation which could allow an attacker unauthorized lateral compromise or widespread credential leakage if a single internal component is breached.

CVSS v3
7.4
EG Score
7.4(high)
EG Risk
33(Track)
EG Risk 33/100SSVC: Track

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
Severity74% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
6%
KEV
Not listed

Published

August 24, 2026

Last Modified

August 28, 2026

Advisory Details (1)

Auto-updated Aug 24, 2026
No patch confirmed yet.
generic

Security Bulletin: Multiple security vulnerabilities affect HCL Hive - Customer Support

https://support.hcl-software.com/csm?id=kb_article&sysparm_article=KB0131731

Vendor Advisories for CVE-2026-21751(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 24× in last 7d / 97× 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.

  1. 2026-09-19 07:13 UTCEG score recompute
  2. 2026-09-19 07:13 UTCGHSA enrichment
  3. 2026-09-18 19:27 UTCEPSS rescore
  4. 2026-09-18 18:19 UTCGHSA enrichment
  5. 2026-09-18 05:12 UTCEG score recompute
  6. 2026-09-18 05:12 UTCGHSA enrichment
  7. 2026-09-17 16:18 UTCGHSA enrichment
  8. 2026-09-17 03:24 UTCGHSA enrichment
  9. 2026-09-16 14:30 UTCEG score recompute
  10. 2026-09-16 14:30 UTCGHSA enrichment
  11. 2026-09-16 14:07 UTCEPSS rescore
  12. 2026-09-16 05:15 UTCEPSS rescore
  13. 2026-09-16 01:36 UTCGHSA enrichment
  14. 2026-09-15 12:42 UTCEG score recompute
  15. 2026-09-15 12:42 UTCGHSA enrichment
  16. 2026-09-14 23:45 UTCGHSA enrichment
  17. 2026-09-14 10:51 UTCGHSA enrichment
  18. 2026-09-13 21:57 UTCEG score recompute
  19. 2026-09-13 21:57 UTCGHSA enrichment
  20. 2026-09-13 16:47 UTCEPSS rescore
  21. 2026-09-13 09:02 UTCGHSA enrichment
  22. 2026-09-12 20:09 UTCEG score recompute
  23. 2026-09-12 20:09 UTCGHSA enrichment
  24. 2026-09-12 15:01 UTCEPSS rescore
  25. 2026-09-12 07:15 UTCGHSA enrichment
Show 72 more
  1. 2026-09-11 18:21 UTCEG score recompute
  2. 2026-09-11 18:21 UTCGHSA enrichment
  3. 2026-09-11 14:52 UTCEPSS rescore
  4. 2026-09-11 05:27 UTCGHSA enrichment
  5. 2026-09-10 16:31 UTCEG score recompute
  6. 2026-09-10 16:31 UTCGHSA enrichment
  7. 2026-09-10 09:34 UTCEPSS rescore
  8. 2026-09-10 03:26 UTCGHSA enrichment
  9. 2026-09-09 14:32 UTCGHSA enrichment
  10. 2026-09-09 01:32 UTCEG score recompute
  11. 2026-09-09 01:32 UTCGHSA enrichment
  12. 2026-09-08 22:00 UTCEPSS rescore
  13. 2026-09-07 21:39 UTCEG score recompute
  14. 2026-09-07 21:39 UTCGHSA enrichment
  15. 2026-09-07 16:01 UTCEPSS rescore
  16. 2026-09-07 08:45 UTCGHSA enrichment
  17. 2026-09-06 19:44 UTCEG score recompute
  18. 2026-09-06 19:44 UTCGHSA enrichment
  19. 2026-09-06 13:47 UTCEPSS rescore
  20. 2026-09-06 13:47 UTCEPSS rescore
  21. 2026-09-06 06:49 UTCGHSA enrichment
  22. 2026-09-05 17:55 UTCEG score recompute
  23. 2026-09-05 17:55 UTCGHSA enrichment
  24. 2026-09-05 05:00 UTCGHSA enrichment
  25. 2026-09-04 16:05 UTCEG score recompute
  26. 2026-09-04 16:05 UTCGHSA enrichment
  27. 2026-09-04 05:06 UTCEPSS rescore
  28. 2026-09-04 03:10 UTCGHSA enrichment
  29. 2026-09-03 14:13 UTCGHSA enrichment
  30. 2026-09-03 01:18 UTCEG score recompute
  31. 2026-09-03 01:18 UTCGHSA enrichment
  32. 2026-09-02 14:11 UTCEPSS rescore
  33. 2026-09-02 12:22 UTCGHSA enrichment
  34. 2026-09-01 23:27 UTCEG score recompute
  35. 2026-09-01 23:27 UTCGHSA enrichment
  36. 2026-09-01 13:53 UTCEPSS rescore
  37. 2026-09-01 10:32 UTCEG score recompute
  38. 2026-09-01 10:32 UTCGHSA enrichment
  39. 2026-09-01 04:39 UTCEPSS rescore
  40. 2026-08-31 21:32 UTCGHSA enrichment
  41. 2026-08-31 08:39 UTCGHSA enrichment
  42. 2026-08-30 19:38 UTCEG score recompute
  43. 2026-08-30 19:38 UTCGHSA enrichment
  44. 2026-08-30 19:17 UTCEPSS rescore
  45. 2026-08-30 06:44 UTCEG score recompute
  46. 2026-08-30 06:44 UTCGHSA enrichment
  47. 2026-08-30 01:22 UTCEPSS rescore
  48. 2026-08-29 17:49 UTCGHSA enrichment
  49. 2026-08-29 04:50 UTCEG score recompute
  50. 2026-08-29 04:50 UTCGHSA enrichment
  51. 2026-08-28 21:41 UTCEPSS rescore
  52. 2026-08-28 15:53 UTCGHSA enrichment
  53. 2026-08-28 13:03 UTCGHSA enrichment
  54. 2026-08-28 00:07 UTCEG score recompute
  55. 2026-08-28 00:07 UTCGHSA enrichment
  56. 2026-08-27 14:25 UTCEPSS rescore
  57. 2026-08-27 11:12 UTCGHSA enrichment
  58. 2026-08-26 22:18 UTCEG score recompute
  59. 2026-08-26 22:18 UTCGHSA enrichment
  60. 2026-08-26 14:46 UTCEPSS rescore
  61. 2026-08-26 09:22 UTCGHSA enrichment
  62. 2026-08-25 20:12 UTCEG score recompute
  63. 2026-08-25 20:12 UTCGHSA enrichment
  64. 2026-08-25 13:48 UTCEPSS rescore
  65. 2026-08-25 07:18 UTCGHSA enrichment
  66. 2026-08-24 18:23 UTCEG score recompute
  67. 2026-08-24 18:22 UTCGHSA enrichment
  68. 2026-08-24 17:36 UTCEG score recompute
  69. 2026-08-24 17:36 UTCGHSA enrichment
  70. 2026-08-24 14:24 UTCEG score recompute
  71. 2026-08-24 13:22 UTCEG score recompute
  72. 2026-08-24 13:22 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-21751?
CVE-2026-21751 is a high vulnerability published on August 24, 2026. HCL Hive is affected by a cryptographic primitive with a risky implementation which could allow an attacker unauthorized lateral compromise or widespread credential leakage if a single internal component is breached.
When was CVE-2026-21751 disclosed?
CVE-2026-21751 was first published in the National Vulnerability Database on August 24, 2026, with the most recent update on August 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-21751 actively exploited?
CVE-2026-21751 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 94.2% of all scored CVEs.
What is the CVSS score of CVE-2026-21751?
CVE-2026-21751 has a CVSS v3 base score of 7.4 (NVD).
How do I remediate CVE-2026-21751?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-21751, 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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