CVE-2026-21808

MEDIUMPre-NVD 4.14.1
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

Score 4.1 from GitHub Security Advisory published 2026-08-27. A secondary CVSS source baseline 4.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source
Trending — 3 sources updated this week
4.1EG
EchelonGraph verdictMonitorRemediate within your standard update timelines (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.1%CVSS: 4.1Exploit: None knownExposed services: Not assessed

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

HCL BigFix Quantum Risk Analyzer generates highly detailed logging information by default which increases the risk of sensitive data leakage and can provide an attacker with internal application logic and architectural details.

CVSS v3
4.1
EG Score
4.1MEDIUMmedium confidence
EG Risk
18
EG Risk 18/100

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 (value × EchelonGraph’s weight)
Severity41% × 45%
The EG Score, 4.1 of 10.
Exploitation0.1% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.
EPSS PROB
0.1%
EPSS %ILE
below the 1st
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at every mission impact level.

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

August 26, 2026

Last Modified

August 28, 2026

Advisory Details (1)

Auto-updated Aug 26, 2026
No fix on record yet.
Web page

Security Bulletin: Multiple vulnerabilities affect HCL BigFix Quantum Risk Analyzer - Customer Support

https://support.hcl-software.com/csm?id=kb_article&sysparm_article=KB0133289

Vendor Advisories for CVE-2026-21808(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 18× in last 7d / 68× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 99 of 116 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 1 repeat row among the latest 100 is merged into the row it repeats. The 17 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-11 20:04 UTCEG score recompute
  2. 2026-10-11 17:17 UTCEG score recompute
  3. 2026-10-11 14:49 UTCEG score recompute
  4. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.1% · below the 1st percentile
  5. 2026-10-10 19:59 UTCEPSS rescoreEPSS 0.1% · below the 1st percentile
  6. 2026-10-10 06:02 UTCEG score recompute
  7. 2026-10-10 06:02 UTCGHSA enrichmentGHSA-2vm7-fvj4-mcvr · GitHub CVSS 4.1
  8. 2026-10-09 20:06 UTCEPSS rescoreEPSS 0.1% · below the 1st percentile
  9. 2026-10-09 06:04 UTCEG score recompute
  10. 2026-10-09 06:04 UTCGHSA enrichmentGHSA-2vm7-fvj4-mcvr · GitHub CVSS 4.1
  11. 2026-10-08 17:11 UTCEPSS rescoreEPSS 0.1% · below the 1st percentile
  12. 2026-10-08 06:36 UTCEG score recompute
  13. 2026-10-08 06:36 UTCGHSA enrichmentGHSA-2vm7-fvj4-mcvr · GitHub CVSS 4.1
  14. 2026-10-07 23:47 UTCEPSS rescoreEPSS 0.1% · below the 1st percentile
  15. 2026-10-07 07:08 UTCEG score recompute
  16. 2026-10-07 07:08 UTCGHSA enrichmentGHSA-2vm7-fvj4-mcvr · GitHub CVSS 4.1
  17. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.1% · below the 1st percentile
  18. 2026-10-06 07:35 UTCGHSA enrichmentGHSA-2vm7-fvj4-mcvr · GitHub CVSS 4.1
  19. 2026-10-05 04:57 UTCEG score recompute
  20. 2026-10-05 04:57 UTCGHSA enrichmentGHSA-2vm7-fvj4-mcvr · GitHub CVSS 4.1
  21. 2026-10-04 23:21 UTCEPSS rescoreEPSS 0.1% · below the 1st percentile
  22. 2026-10-04 05:30 UTCEG score recompute
  23. 2026-10-04 05:30 UTCGHSA enrichmentGHSA-2vm7-fvj4-mcvr · GitHub CVSS 4.1
  24. 2026-10-03 06:04 UTCGHSA enrichmentGHSA-2vm7-fvj4-mcvr · GitHub CVSS 4.1
  25. 2026-10-02 06:20 UTCEG score recompute
Show 74 more
  1. 2026-10-02 06:20 UTCGHSA enrichmentGHSA-2vm7-fvj4-mcvr · GitHub CVSS 4.1
  2. 2026-10-01 19:49 UTCEPSS rescoreEPSS 0.1% · below the 1st percentile
  3. 2026-10-01 05:32 UTCEG score recompute
  4. 2026-10-01 05:32 UTCGHSA enrichmentGHSA-2vm7-fvj4-mcvr · GitHub CVSS 4.1
  5. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.1% · below the 1st percentile
  6. 2026-09-30 05:59 UTCEG score recompute
  7. 2026-09-30 05:59 UTCGHSA enrichmentGHSA-2vm7-fvj4-mcvr · GitHub CVSS 4.1
  8. 2026-09-29 15:21 UTCEPSS rescoreEPSS 0.1% · below the 1st percentile
  9. 2026-09-28 21:20 UTCGHSA enrichmentGHSA-2vm7-fvj4-mcvr · GitHub CVSS 4.1
  10. 2026-09-27 19:57 UTCEG score recompute
  11. 2026-09-27 19:57 UTCGHSA enrichmentGHSA-2vm7-fvj4-mcvr · GitHub CVSS 4.1
  12. 2026-09-27 13:47 UTCEPSS rescoreEPSS 0.1% · below the 1st percentile
  13. 2026-09-26 20:30 UTCEG score recompute
  14. 2026-09-26 20:30 UTCGHSA enrichmentGHSA-2vm7-fvj4-mcvr · GitHub CVSS 4.1
  15. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.1% · below the 1st percentile
  16. 2026-09-26 00:26 UTCEPSS rescoreEPSS 0.1% · below the 1st percentile
  17. 2026-09-25 03:23 UTCEG score recompute
  18. 2026-09-25 03:23 UTCGHSA enrichmentGHSA-2vm7-fvj4-mcvr · GitHub CVSS 4.1
  19. 2026-09-24 14:03 UTCEPSS rescoreEPSS 0.1% · below the 1st percentile
  20. 2026-09-24 03:56 UTCGHSA enrichmentGHSA-2vm7-fvj4-mcvr · GitHub CVSS 4.1
  21. 2026-09-23 04:22 UTCGHSA enrichmentGHSA-2vm7-fvj4-mcvr · GitHub CVSS 4.1
  22. 2026-09-22 04:55 UTCEG score recompute
  23. 2026-09-22 04:55 UTCGHSA enrichmentGHSA-2vm7-fvj4-mcvr · GitHub CVSS 4.1
  24. 2026-09-21 05:28 UTCGHSA enrichmentGHSA-2vm7-fvj4-mcvr · GitHub CVSS 4.1
  25. 2026-09-20 05:13 UTCEG score recompute
  26. 2026-09-20 05:13 UTCGHSA enrichmentGHSA-2vm7-fvj4-mcvr · GitHub CVSS 4.1
  27. 2026-09-19 05:46 UTCEG score recompute
  28. 2026-09-19 05:46 UTCGHSA enrichmentGHSA-2vm7-fvj4-mcvr · GitHub CVSS 4.1
  29. 2026-09-18 19:27 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  30. 2026-09-18 06:19 UTCEG score recompute
  31. 2026-09-18 06:19 UTCGHSA enrichmentGHSA-2vm7-fvj4-mcvr · GitHub CVSS 4.1
  32. 2026-09-17 06:52 UTCEG score recompute
  33. 2026-09-17 06:52 UTCGHSA enrichmentGHSA-2vm7-fvj4-mcvr · GitHub CVSS 4.1
  34. 2026-09-16 14:07 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  35. 2026-09-16 07:01 UTCEG score recompute
  36. 2026-09-16 07:01 UTCGHSA enrichmentGHSA-2vm7-fvj4-mcvr · GitHub CVSS 4.1
  37. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.1% · below the 1st percentile
  38. 2026-09-15 07:35 UTCEG score recompute
  39. 2026-09-15 07:35 UTCGHSA enrichmentGHSA-2vm7-fvj4-mcvr · GitHub CVSS 4.1
  40. 2026-09-14 08:08 UTCEG score recompute
  41. 2026-09-14 08:08 UTCGHSA enrichmentGHSA-2vm7-fvj4-mcvr · GitHub CVSS 4.1
  42. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.1% · below the 1st percentile
  43. 2026-09-13 08:40 UTCGHSA enrichmentGHSA-2vm7-fvj4-mcvr · GitHub CVSS 4.1
  44. 2026-09-12 09:14 UTCEG score recompute
  45. 2026-09-12 09:14 UTCGHSA enrichmentGHSA-2vm7-fvj4-mcvr · GitHub CVSS 4.1
  46. 2026-09-11 14:52 UTCEPSS rescoreEPSS 0.1% · below the 1st percentile
  47. 2026-09-11 09:47 UTCGHSA enrichmentGHSA-2vm7-fvj4-mcvr · GitHub CVSS 4.1
  48. 2026-09-10 10:20 UTCEG score recompute
  49. 2026-09-10 10:20 UTCGHSA enrichmentGHSA-2vm7-fvj4-mcvr · GitHub CVSS 4.1
  50. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.1% · below the 1st percentile
  51. 2026-09-09 10:53 UTCEG score recompute
  52. 2026-09-09 10:53 UTCGHSA enrichmentGHSA-2vm7-fvj4-mcvr · GitHub CVSS 4.1
  53. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.1% · below the 1st percentile
  54. 2026-09-08 11:26 UTCEG score recompute
  55. 2026-09-08 11:26 UTCGHSA enrichmentGHSA-2vm7-fvj4-mcvr · GitHub CVSS 4.1
  56. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.1% · below the 1st percentile
  57. 2026-09-07 11:13 UTCEG score recompute
  58. 2026-09-07 11:13 UTCGHSA enrichmentGHSA-2vm7-fvj4-mcvr · GitHub CVSS 4.1
  59. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.1% · below the 1st percentile
  60. 2026-09-06 11:44 UTCEG score recompute
  61. 2026-09-06 11:44 UTCGHSA enrichmentGHSA-2vm7-fvj4-mcvr · GitHub CVSS 4.1
  62. 2026-09-05 12:18 UTCEG score recompute
  63. 2026-09-05 12:17 UTCGHSA enrichmentGHSA-2vm7-fvj4-mcvr · GitHub CVSS 4.1
  64. 2026-09-04 12:50 UTCEG score recompute
  65. 2026-09-04 12:50 UTCGHSA enrichmentGHSA-2vm7-fvj4-mcvr · GitHub CVSS 4.1
  66. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.1% · below the 1st percentile
  67. 2026-09-03 13:24 UTCEG score recompute
  68. 2026-09-03 13:23 UTCGHSA enrichmentGHSA-2vm7-fvj4-mcvr · GitHub CVSS 4.1
  69. 2026-09-02 14:11 UTCEPSS rescoreEPSS 0.1% · below the 1st percentile
  70. 2026-09-02 13:54 UTCGHSA enrichmentGHSA-2vm7-fvj4-mcvr · GitHub CVSS 4.1
  71. 2026-09-01 14:14 UTCEG score recompute
  72. 2026-09-01 14:14 UTCGHSA enrichmentGHSA-2vm7-fvj4-mcvr · GitHub CVSS 4.1
  73. 2026-09-01 04:39 UTCEPSS rescoreEPSS 0.1% · below the 1st percentile
  74. 2026-08-31 14:45 UTCEG score recompute

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-21808?
CVE-2026-21808 is a medium-severity vulnerability; its CVE record was published on August 26, 2026. HCL BigFix Quantum Risk Analyzer generates highly detailed logging information by default which increases the risk of sensitive data leakage and can provide an attacker with internal application logic and architectural details.
When was CVE-2026-21808 made public?
CVE-2026-21808 was made public on August 26, 2026: that is the date its CVE record's CNA, HCL Software, gives for when the vulnerability was made public. The CVE record itself was published on August 26, 2026. EchelonGraph's copy of the record carries a last-modified date of August 28, 2026; the record at its source may have been updated since.
Is CVE-2026-21808 actively exploited?
CVE-2026-21808 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.1% probability of exploitation in the next 30 days (below the 1st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-21808?
CVE-2026-21808 has a CVSS base score of 4.1 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-21808?
No fix for CVE-2026-21808 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-21808 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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