CVE-2026-18847

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.8 under NVD CVSS v3. EPSS exploit probability: 0.2%, top 93% of all CVEs by exploit prediction. GitHub Security Advisory enrichment pending alignment with NVD CVSS.

Triggered by: NVD CVSS baseline
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.8Exploit: None knownExposed: 0

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

IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote unauthenticated attacker to harvest credentials due to spoofing of Navigator for i.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
44(Track)
EG Risk 44/100SSVC: 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
Severity98% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
7%
KEV
Not listed

Published

August 12, 2026

Last Modified

August 17, 2026

Advisory Details (1)

Auto-updated Sep 14, 2026
No patch confirmed yet.
generic

Security Bulletin: IBM i is Affected By Multiple Vulnerabilities in Navigator for i

https://www.ibm.com/support/pages/node/7283292

Vendor Advisories for CVE-2026-18847(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 48× in last 7d / 207× 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 260 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-18847?
CVE-2026-18847 is a critical vulnerability published on August 12, 2026. IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote unauthenticated attacker to harvest credentials due to spoofing of Navigator for i.
When was CVE-2026-18847 disclosed?
CVE-2026-18847 was first published in the National Vulnerability Database on August 12, 2026, with the most recent update on August 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-18847 actively exploited?
CVE-2026-18847 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 92.6% of all scored CVEs.
What is the CVSS score of CVE-2026-18847?
CVE-2026-18847 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-18847?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-18847, 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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