CVE-2026-18249

CRITICALNVD 9.99.9—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.9 under NVD CVSS v3. EPSS exploit probability: 0.4% (30th percentile of EPSS-scored CVEs). GitHub Security Advisory enrichment pending alignment with NVD CVSS.

Triggered by: NVD CVSS baseline
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
9.9EG
EchelonGraph verdictPlan mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 9.9Exploit: None knownExposed services: Not assessed

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

IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote authenticated attacker to gain elevated privileges due to improper validation of pointers read from Java-controlled addresses.

CVSS v3
9.9
EG Score
9.9CRITICALmedium confidence
EG Risk
45
EG Risk 45/100CISA SSVC

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
Severity99% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
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
0.4%
EPSS %ILE
30th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* at high (mission-essential systems).

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 total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 13, 2026

Last Modified

August 19, 2026

Advisory Details (1)

Auto-updated Sep 30, 2026
No patch confirmed yet.
generic

Security Bulletin: IBM i Is Affected By Multiple Vulnerabilities in IBM Java SDK and IBM Java Runtime

https://www.ibm.com/support/pages/node/7283283

Vendor Advisories for CVE-2026-18249(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 32× in last 7d / 180× 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 339 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-18249?
CVE-2026-18249 is a critical vulnerability published on August 13, 2026. IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote authenticated attacker to gain elevated privileges due to improper validation of pointers read from Java-controlled addresses.
When was CVE-2026-18249 disclosed?
CVE-2026-18249 was first published on August 13, 2026, with the most recent update on August 19, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-18249 actively exploited?
CVE-2026-18249 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (30th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-18249?
CVE-2026-18249 has a CVSS v3 base score of 9.9 (NVD).
How do I remediate CVE-2026-18249?
No fix for CVE-2026-18249 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-2026-18249 are linked in the Vendor Advisories panel on this page.

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